1 . 已知双曲线
的左焦点为
,直线
经过左焦点
与双曲线的左支分别交于两点
,点
是右支上一点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4058fc45c49e6710ba7e273cb7888704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.当直线![]() ![]() ![]() |
B.线段![]() |
C.![]() ![]() |
D.当点![]() ![]() ![]() ![]() |
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2 . 已知
是双曲线
的右焦点,直线
经过点
且与双曲线相交于
两点,记该双曲线的离心率为
,直线
的斜率为
,若
,则k与e的关系是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fdb47f1a101dcad81d01584c649ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdfcc3849756cd7bea1134bc3431a87.png)
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3 . 已知双曲线
:
与椭圆
有公共焦点,
的左、右焦点分别为
,
,且经过点
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6140983d54ff07307ec65bddd7320e.png)
A.双曲线![]() ![]() |
B.若直线![]() ![]() ![]() |
C.设![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.若动直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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2021-11-06更新
|
3319次组卷
|
8卷引用:黑龙江省鸡西实验中学2023-2024学年高二上学期期末模拟数学试题
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4 . 已知实数
,
满足
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca5119a1b317b5ea532c3016c56377c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d542ed1e804d44f12f9905b8179a2e5f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-29更新
|
2927次组卷
|
5卷引用:黑龙江省哈尔滨市第三中学2021-2022学年高二上学期10月月考数学试题
黑龙江省哈尔滨市第三中学2021-2022学年高二上学期10月月考数学试题浙江省杭州市七县市2020-2021学年高二上学期期末数学试题(已下线)【新东方】高中数学20210304-007(已下线)【新东方】高中数学20210429—005【2020】【高二上】安徽省皖北五校联盟2024届高三第二次联考数学试卷
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5 . 已知曲线Cn:x2﹣2nx+y2=0,(n=1,2,…).从点P(﹣1,0)向曲线Cn引斜率为kn(kn>0)的切线ln,切点为Pn(xn,yn).
(1)求数列{xn}与{yn}的通项公式;
(2)证明:
.
(1)求数列{xn}与{yn}的通项公式;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c3d8dd913f69fb4e174ccbdd7e016d.png)
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