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【327893】2023年新疆维吾尔族自治区中考数学真题

时间:2025-01-20 20:36:37 作者: 字数:18487字
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2023年新疆维吾尔族自治区中考数学真题

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一、选择题

1.﹣5的绝对值是( )
A
5
B
.﹣5
C
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
D
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

2.下列交通标志中是轴对称图形的是(       
A
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
B <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
C <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
D <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    

3.我国自主研制的全球最大集装箱船“地中海泰莎”号的甲板面积近似于4个标准足球场,可承载 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 吨的货物,数字 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 用科学记数法可表示为(       
A
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
B
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
C
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
D
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

4.一次函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的图象不经过       
A
.第一象限
B
.第二象限
C
.第三象限
D
.第四象限

5.计算 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的结果是(       
A
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
B
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
C
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
D
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

6.用配方法解一元二次方程 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,配方后得到的方程是(       
A
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
B
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
C
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
D
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

7.如图,在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中,若 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则扇形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (阴影部分)的面积是(       )
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
A <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
B
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
C
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
D
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

8.如图,在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中,以点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 为圆心,适当长为半径作弧,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,分别以点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 为圆心,大于 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 长为半径作弧,两弧在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的内部交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,作射线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .若 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的长为(       )
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
A <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
B
1
C
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
D
2

9.如图,在平面直角坐标系中,直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 与抛物线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 相交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .结合图象,判断下列结论:①当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;② <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是方程 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的一个解;③若 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是抛物线上的两点,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;④对于抛物线, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的取值范围是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .其中正确结论的个数是(       
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
A4
B
3
C
2
D
1

评卷人

得分




二、填空题

10.要使分式 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 有意义,则x需满足的条件是______

11.若正多边形的一个内角等于 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则这个正多边形的边数是 ______

12.在平面直角坐标系中有五个点,分别是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,从中任选一个点恰好在第一象限的概率是______

13.如图,在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中,若 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ______ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    

14.如图,在平面直角坐标系中, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 为直角三角形, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .若反比例函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的图象经过 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ______
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>      

15.如图,在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上一动点,将 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 沿 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 折叠得到 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,当点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 恰好落在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的长为______
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    

评卷人

得分




三、解答题

16.计算:
(1)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

17.1)解不等式组: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
2)金秋时节,新疆瓜果飘香.某水果店A种水果每千克5元,B种水果每千克8元,小明买了AB两种水果共7千克花了41元.AB两种水果各买了多少千克?

18.如图, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 相交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 分别是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点.
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
(1)求证: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时,求证:四边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是矩形.

19.跳绳是某校体育活动的特色项目.体育组为了了解七年级学生1分钟跳绳次数情况,随机抽取20名七年级学生进行1分钟跳绳测试(单位:次),数据如下:
100
  110  114  114  120  122  122  131  144  148
152
  155  156  165  165  165  165  174  188  190
对这组数据进行整理和分析,结果如下:

平均数

众数

中位数

145

 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

请根据以上信息解答下列问题:
(1)
填空: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ______ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ______
(2)
学校规定1分钟跳绳165次及以上为优秀,请你估计七年级240名学生中,约有多少名学生能达到优秀?
(3)
某同学1分钟跳绳152次,请推测该同学的1分钟跳绳次数是否超过年级一半的学生?说明理由.

20.烽燧即烽火台,是古代军情报警的一种措施,史册记载,夜间举火称“烽”,白天放烟称“燧”.克孜尔尕哈烽燧是古丝绸之路北道上新疆境内时代最早、保存最完好、规模最大的古代烽燧(如图1).某数学兴趣小组利用无人机测量该烽燧的高度,如图2,无人机飞至距地面高度 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 米的A处,测得烽燧 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的顶部C处的俯角为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,测得烽燧 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的底部B处的俯角为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,试根据提供的数据计算烽燧 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的高度.(参数据: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    

21.随着端午节的临近, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 两家超市开展促销活动,各自推出不同的购物优惠方案,如下表:


 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市

 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市

优惠方案

所有商品按八折出售

购物金额每满 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元返 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

(1)当购物金额为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元时,选择超市______(填“ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ”或“ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ”)更省钱;
当购物金额为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元时,选择超市______(填“ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ”或“ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ”)更省钱;
(2)
若购物金额为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> )元时,请分别写出它们的实付金额 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (元)与购物金额 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (元)之间的函数解析式,并说明促销期间如何选择这两家超市去购物更省钱?
(3)
对于 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市的优惠方案,随着购物金额的增大,顾客享受的优惠率不变,均为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> %(注: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ).若在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市购物,购物金额越大,享受的优惠率一定越大吗?请举例说明.

22.如图, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的直径,点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上的点,且 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的垂线,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的延长线于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的延长线于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
(1)求证: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的切线;
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,求 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的长.

23.(建立模型)(1)如图 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是线段 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上的一点, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,垂足分别为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .求证: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(
类比迁移)(2)如图 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,一次函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的图象与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 、与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,将线段 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 绕点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 逆时针旋转 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 得到 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 、直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
求点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的坐标;
求直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式;
(
拓展延伸)(3)如图 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,抛物线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 两点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 在点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的左侧 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 点,已知点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> .抛物线上是否存在点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,使得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,若存在,求出点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的横坐标.       
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>       

参考答案

1.A

【解析】
根据负数的绝对值等于它的相反数可得答案.
解:|﹣5|=5
故选A

2.B

【解析】
根据轴对称图形的概念逐项分析判断即可,轴对称图形的概念:平面内,一个图形沿一条直线折叠,直线两旁的部分能够完全重合的图形.
解:选项ACD均不能找到这样的一条直线,使直线两旁的部分能够完全重合的图形,所以不是轴对称图形;
选项B能找到这样的一条直线,使直线两旁的部分能够完全重合,所以是轴对称图形;
故选:B

3.A

【解析】
用科学记数法表示较大的数时,一般形式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,其中 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 为整数.
解: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故选:A

4.D

【解析】
根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 即可求解.
解:∵一次函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
一次函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的图象不经过第四象限,
故选:D

5.C

【解析】
先计算单项式乘以单项式,然后根据单项式除以单项式进行计算即可求解.
解: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故选:C

6.D

【解析】
方程两边同时加上一次项系数一半的平方即 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 计算即可.
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故选D

7.B

【解析】
根据圆周角定理求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,然后根据扇形面积公式进行计算即可求解.
解:∵ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故选:B.

8.C

【解析】
过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,勾股定理求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据作图可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的角平分线,进而设 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,代入数据即可求解.
解:如图所示,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
根据作图可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的角平分线,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故选:C

9.B

【解析】
根据函数图象直接判断①②,根据题意求得解析式,进而得出抛物线与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴的交点坐标,结合图形即可判断③,化为顶点式,求得顶点坐标,进而即可判断④,即可求解.
解:根据函数图象,可得当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,故①正确;
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是方程 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的一个解;故②正确;
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 在抛物线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是抛物线上的两点,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;故③正确;
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,顶点坐标为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
对于抛物线, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的取值范围是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,故④错误.
故正确的有3个,
故选:B

10. <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
根据分式有意义的条件即可求解.
解:∵分式 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 有意义,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

11.10##

【解析】
本题需先根据已知条件设出正多边形的边数,再根据正多边形的计算公式得出结果即可.
解:设这个正多边形是正n边形,根据题意得:
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故答案为:10

12. <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
根据第一象限的点的特征,可得共有2个点在第一象限,进而根据概率公式即可求解.
解:在平面直角坐标系中有五个点,分别是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
其中 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,在第一象限,共2个点,
从中任选一个点恰好在第一象限的概率是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

13. <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
根据等边对等角得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,再有三角形内角和定理及等量代换求解即可.
解:∵ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,即 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

14. <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据题意可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,由点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点,可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中,通过解直角三角形可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,从而得到点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,代入函数解析式即可得到答案.
解:如图,作 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 在反比例函数图象上,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

15. <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ## <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的延长线于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据平行四边形的性质以及已知条件得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,进而求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据折叠的性质得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,进而在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中,勾股定理即可求解.
解:如图所示,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的延长线于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 沿 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 折叠得到 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,当点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 恰好落在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 上时,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (负整数)
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

16.(1) <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
1)根据有理数的乘方,零指数幂,算术平方根的定义,进行计算即可求解;
2)根据平方差公式以及单项式乘以多项式的法则进行计算即可求解.
1)解:原式 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
2)解:原式 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

17.1 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;(2)购买A种水果5千克,则购买B种水果 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 千克

【解析】
1)先求出各个不等式的解集,然后确定不等式组的解集即可;
2)设购买A种水果x千克,则购买B种水果 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 千克,根据题意列出方程求解即可.
解:(1 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解不等式①得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解不等式②得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
不等式组的解集为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
2)设购买A种水果x千克,则购买B种水果 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 千克,根据题意得:
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
购买A种水果5千克,则购买B种水果 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 千克.

18.(1)见解析
(2)
见解析

【解析】
1)直接证明 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 分别是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点,即可得证;
2)证明四边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是平行四边形,进而根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,推导出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是等边三角形,进而可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,即可证明四边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是矩形.
1)证明:在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 中,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
又∵ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 分别是 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
2)∵ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
四边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是平行四边形, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的中点, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是等边三角形,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
四边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是矩形.

19.(1) <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(3)
是,理由见解析

【解析】
1)根据众数与中位数的定义进行计算即可求解;
2)根据样本估计总体,用跳绳165次及以上人数的占比乘以总人数,即可求解;
3)根据中位数的定义即可求解;
1)解:这组数据中,165出现了4次,出现次数最多
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
这组数据从小到大排列,第10个和11个数据分别为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
2)解:∵跳绳165次及以上人数有7个,
估计七年级240名学生中,有 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 个优秀,
3)解:∵中位数为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
某同学1分钟跳绳152次,可推测该同学的1分钟跳绳次数超过年级一半的学生.

20. <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
过点A <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的平行线交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的延长线于点G,过点C <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据题意得出边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 为矩形, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,再由正切函数求解即可.
解:过点A <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的平行线交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的延长线于点G,过点C <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,如图所示:
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
根据题意得:四边形 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 为矩形, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 米,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 米.

21.(1) <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> , <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时,选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱
(3)
不一定,理由见解析

【解析】
1)根据题意,分别计算购物金额为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元时,两家超市的费用,比较即可求解;
2)根据题意列出函数关系,根据当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,结合题意,即可求解;
3)根据题意以及(2)的结论,举出反例即可求解.
1)解:购物金额为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市费用为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (元)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市费用为80元,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
当购物金额为80元时,选择超市 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 更省钱;
购物金额为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市费用为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (元)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市费用为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
当购物金额为130元时,选择超市 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 更省钱;
故答案为: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> , <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
2)解:依题意, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市没有优惠,故选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时,选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,
综上所述, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时,选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时,两家一样,
综上所述,当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱,当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时,选择 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市更省钱;
3)在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市购物,购物金额越大,享受的优惠率不一定越大,
例如:当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市购物 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元,返 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元,相当于打 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 折,即优惠率为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市购物 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元,返 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 元,则优惠率为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 超市购物,购物金额越大,享受的优惠率不一定越大,

22.(1)见解析
(2)
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
1)连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,由 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据已知条件得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,证明 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,结合已知条件可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,即可得证;
2)连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据已知条件得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,证明 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,进而求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,进而即可求解.
1)证明:如图所示,连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是半径,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的切线;
2)解:如图所示,连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    

 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 是直径,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> , <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的直径,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

23.1)见解析; (2)① <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;②直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;(3 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>

【解析】
[
建立模型]1)根据题意得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,证明 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,即可得证;
[
类比迁移] 2)①过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,同(1)的方法,证明 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据一次函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的图象与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 、与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,进而可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 点的坐标;
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,设直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,将点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 代入得直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
[
拓展延伸]3)根据解析式求得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ;①当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 点在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴下方时,如图所示,连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,证明 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,根据 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 得出 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,设 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,求得点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,进而求得直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式,联立抛物线解析式即可求解;②当 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 点在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴的上方时,如图所示,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,同①的方法即可求解.
[
建立模型]1)证明:∵ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
又∵ <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
[
类比迁移]2)如图所示,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
将线段 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 绕点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 逆时针旋转 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 得到 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
一次函数 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的图象与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 、与 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,即 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,即 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
②∵
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,设直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 代入得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
3)∵抛物线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴交于 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 两点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 在点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的左侧 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 时, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 点在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴下方时,如图所示,连接 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
设直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
代入 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
联立 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (舍去), <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 点在 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴的上方时,如图所示,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴,交 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 轴于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,过点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 于点 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>    
同理可得 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> ,则 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
设直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
代入 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
直线 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的解析式为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
联立 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
解得: <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> (舍去), <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>
综上所述, <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a> 的横坐标为 <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>  <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1084/" title="新疆" class="c1" target="_blank">新疆</a> <a href="/tags/1167/" title="自治区" class="c1" target="_blank">自治区</a> <a href="/tags/1168/" title="维吾尔族" class="c1" target="_blank">维吾尔族</a>