真题
解题方法
1 . 已知椭圆方程C:
,焦点和短轴端点构成边长为2的正方形,过![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180735d52856f4393e40e28e7fcc95bc.png)
的直线l与椭圆交于A,B,
,连接AC交椭圆于D.
(1)求椭圆方程和离心率;
(2)若直线BD的斜率为0,求t.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180735d52856f4393e40e28e7fcc95bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74d6abc4e480e86caebadd7a57692fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbbc6f2e39a2ab1a4fe80ae34ed59c0.png)
(1)求椭圆方程和离心率;
(2)若直线BD的斜率为0,求t.
您最近一年使用:0次
真题
解题方法
2 . 已知
和
为椭圆
上两点.
(1)求C的离心率;
(2)若过P的直线
交C于另一点B,且
的面积为9,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc878a5fd7b508cf817cbb65d3940547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0fa2a6f4b01fd7e6fb809106d97b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
(1)求C的离心率;
(2)若过P的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
真题
3 . 造型可以做成美丽的丝带,将其看作图中曲线C的一部分.已知C过坐标原点O.且C上的点满足横坐标大于
,到点
的距离与到定直线
的距离之积为4,则( )
A.![]() | B.点![]() |
C.C在第一象限的点的纵坐标的最大值为1 | D.当点![]() ![]() |
您最近一年使用:0次
真题
解题方法
4 . 设双曲线
的左右焦点分别为
,过
作平行于
轴的直线交C于A,B两点,若
,则C的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648126e308df11d6e0f1f52233f6691e.png)
您最近一年使用:0次
真题
解题方法
5 . 已知双曲线
左右顶点分别为
,过点
的直线
交双曲线
于
两点.
(1)若离心率
时,求
的值.
(2)若
为等腰三角形时,且点
在第一象限,求点
的坐标.
(3)连接
并延长,交双曲线
于点
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a3c16c6fb4a254b44936b2caf107a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8547f2b4e89b0ae1445bda02d46f0668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(1)若离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0276541c12707b24d2f06ea3d976cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f02a5f7c7bed4e46a9ea36b510590a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d353f7781e779b5c72e56388934e345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
真题
解题方法
6 . 已知向量
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c80a3780e3e480d0d9bb9296dde4e9.png)
A.“![]() ![]() | B.“![]() ![]() |
C.“![]() ![]() | D.“![]() ![]() |
您最近一年使用:0次
真题
7 . 定义一个集合
,集合中的元素是空间内的点集,任取
,存在不全为0的实数
,使得
.已知
,则
的充分条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b35f6fb648951da2a58b8f7f0b1873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096820d860ddf8f3155bf36f5fded491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3082f30bdeb19124814eacce2ac58f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70219b67f6352be3d0a0400bde89d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f0e65d0421529cf42d98794b027e82.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
真题
8 . 已知双曲线
,则过
且和双曲线只有一个交点的直线的斜率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1892b7c3cd7bea116f532f66fba44662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
您最近一年使用:0次
真题
解题方法
9 . 已知向量
,
,则“
”是“
或
”的( )条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494edad8da7d0ca2d44fdb355dd83dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b7ca4667865ebe617fa6539e8d11fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e91d4507cf164a3789dd17b55a0e6fc.png)
A.必要而不充分条件 | B.充分而不必要条件 |
C.充分且必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
真题
解题方法
10 . 已知四棱柱
中,底面
为梯形,
,
平面
,
,其中
.
是
的中点,
是
的中点.
平面
;
(2)求平面
与平面
的夹角余弦值;
(3)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f2d1403904c14839169bacc4fa5025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd044eb8a9c57cb65c2d42d9f25ca7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893fa5f7ababd4524411a054a7362ae3.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893fa5f7ababd4524411a054a7362ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a904c6881536be51416116ab966cf8.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893fa5f7ababd4524411a054a7362ae3.png)
您最近一年使用:0次