解题方法
1 . 点P为曲线C上任意一点,直线
,过点P作PQ与直线l垂直,垂足为Q,点
,且
.
(1)求曲线C的方程;
(2)过曲线C上的点
作圆
的斜率为
,
的两条切线,切线与y轴交于A,B,若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261e2ccfee2e4df6e1f2021de5da27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7422cbdb4ad06d155abb2ccdb25ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709188ef762be0886c4b41ecf45fdd06.png)
(1)求曲线C的方程;
(2)过曲线C上的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23d181391c9f190cb9ab64884d6758b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d30337ed2f68b73a050688566eac4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14b7b85b8e9660ae3d74b9468806a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
解题方法
2 . 点P为曲线C上任意一点,直线l:x=-4,过点P作PQ与直线l垂直,垂足为Q,点
,且
.
(1)求曲线C的方程;
(2)过曲线C上的点
作圆
的两条切线,切线与y轴交于A,B,求△MAB面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7422cbdb4ad06d155abb2ccdb25ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709188ef762be0886c4b41ecf45fdd06.png)
(1)求曲线C的方程;
(2)过曲线C上的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a548ad2182e69f3b0b735a6c72dd761e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d30337ed2f68b73a050688566eac4e4.png)
您最近一年使用:0次
名校
3 . 若圆
上存在两点关于直线
对称,则过圆
外一点
向圆
所作的切线长的最小值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4754e86ce7575d3c2dce023dbb0377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfce37027e26b52e06a4b28b3fcb53ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2021-10-09更新
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655次组卷
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2卷引用:四川省成都市第八中学校2022-2023学年高三上学期第二次模拟考试文科数学试题