名校
1 . 已知直线
是曲线
上任一点
处的切线,直线
是曲线
上点
处的切线,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6263576e5c3f2324a8dac311476bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428d922e63d8a0838da6fdacee919ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78ccece5385affcbbe686da56409d69.png)
A.当![]() ![]() ![]() ![]() |
B.存在![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-03-12更新
|
936次组卷
|
3卷引用:重庆市南开中学校2023-2024学年高二下学期3月定时练习数学试题
名校
解题方法
2 . 已知A,B,C,D是椭圆E:
上四个不同的点,且
是线段AB,CD的交点,且
,若
,则直线l的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e584f799ea554fc5533925ead4672501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17736bcf530ea84bb4a1b10cb7ae94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95e692badf11ca5ac25104a166f4467.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2022-11-26更新
|
2585次组卷
|
3卷引用:辽宁省沈阳市第二中学2022-2023学年高二上学期12月月考数学试题
22-23高二上·上海浦东新·阶段练习
名校
解题方法
3 . 如图,已知满足条件
(其中i为虚数单位)的复数z在复平面xOy对应的点的轨迹为圆C(圆心为C),设复平面xOy上的复数
对应的点为
,定直线m的方程为
,过
的一条动直线l与直线m相交于N点,与圆C相交于P、Q两点,M是弦PQ中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/cdacd8da-c66a-4fae-9d9d-db7170085571.png?resizew=190)
(1)若直线l经过圆心C,求证:l与m垂直;
(2)当
时,求直线l的一般式方程;
(3)设
,试问t是否为定值?若为定值,请求出t的值,若t不为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9255f8d443bd1bdb77e399a1d0334389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef696d6c93ef43cb419bcfc12e454364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6440fce27b45e754415d3733f9af5dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/cdacd8da-c66a-4fae-9d9d-db7170085571.png?resizew=190)
(1)若直线l经过圆心C,求证:l与m垂直;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5953da9c9a4c59d9a00780ed278e9da5.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c53aecada69ab7aa64e233b0a36a916.png)
您最近一年使用:0次
11-12高三·上海·阶段练习
4 . 对于函数
,若存在实数
,使
成立,则称
为
的不动点.
(1)当
时,求
的不动点;
(2)若对于任意的实数
函数
恒有两个相异的不动点,求实数
的取值范围;
(3)在(2)的条件下,若
的图象上
两点的横坐标是函数
的不动点,且直线
是线段
的垂直平分线,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf74824de75eb9090f23aba760eeaf52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c80438b35c093c2de9dce83c650ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175cb11352db7903799db939b29c5c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(2)若对于任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ed049f8d33b7ce57556820a68c1830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7062416ad3bd49f76ac3f43df41575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768c20053807a4bd8caac91e4912191f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次