1 . 圆
上有一定点
是该圆上的两动点.如果
为常数
,可证
必与某个圆
相切,则
的方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8805de7a92c61dca34ef15a8a9355e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81bd5c4974148146c7d8302b8250102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f83ae9a5bb947a97a811a96c0a1fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6d7a0180f28f26f85816cfd4a6d591.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
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名校
解题方法
2 . 若
,
时,函数
(
是实常数)有奇数个零点,记为
,
且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddab35d3e0f63e38827f3a35ed9ed8a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccedd90153860a97caac58b18ea42a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c1a21a670e15cc7e42694410f5a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c9f47e10682bb569d0bdc222e0e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8a779e750c3014474151632d8d5a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42508dd2bbf426186f64c45c9696626d.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() |
D.对任意的![]() ![]() ![]() |
您最近一年使用:0次
2023-04-23更新
|
686次组卷
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4卷引用:安徽省安庆市田家炳中学2022-2023学年高二下学期第二届“校长杯”竞赛数学试题
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