1 . 已知函数
.
(1)设
,证明:当
时,过原点O有且仅有一条直线与曲线
相切;
(2)若函数
有两个零点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce0da73f9c18ef1cb4e9646ff201073.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1d1feee09e10e8eceb8a5ff31ba995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
2 . 已知椭圆
的离心率为
,左右顶点分别为A,B,G为C的上顶点,且
的面积为2.
(1)求椭圆C的方程;
(2)过点
的动直线与C交于M,N两点.证明:直线
与
的交点在一条定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
(1)求椭圆C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
您最近一年使用:0次
3 . 已知双曲线
的左、右焦点分别为
,
,点P在直线
上.当
取最大值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e1aa8ad8272eac52b680547e47bf00.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6cf8bc908b192921416bb2d958ed539.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/19cba91dc2ff8cd1d5771f06f66f9d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e1aa8ad8272eac52b680547e47bf00.png)
您最近一年使用:0次
名校
4 . 已知函数
,
.
(1)讨论
的单调性;
(2)已知
是
的导函数,若对任意的
,都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53196b402e11e898e450c7820b1b9515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb413c37f170adfa576394afa3d29d7.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5f867761781897f53860a579b6086c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-05-19更新
|
566次组卷
|
4卷引用:四川省南江中学2023届高三下学期五月适应性考试(一)理科数学试题
名校
5 . 已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5919ad7c61a497f19ec8f73dcac827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328351ec3ff4885448dca27136cab8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e864991bbe90ea6c57290ee1935ea0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-19更新
|
806次组卷
|
6卷引用:四川省南江中学2023届高三下学期五月适应性考试(一)理科数学试题
四川省南江中学2023届高三下学期五月适应性考试(一)理科数学试题湖南省部分学校2023届高三下学期5月联数学试题河南省驻马店市2023届高三二模理科数学试题河南省创新发展联盟2023届高三仿真模拟预测理科数学试题(已下线)5.3.1函数的单调性(导学案)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第二册)四川省绵阳市三台中学校2024届高三下学期第一次仿真测试理科数学试题
名校
解题方法
6 . 已知双曲线
的左、右焦点分别为
,
,P是C在第一象限上的一点,且直线
的斜率为
,点B为
的内心,直线PB交x轴于点A,且
,则双曲线C的渐近线方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.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/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640140654b6ea480d761858fa00625cd.png)
您最近一年使用:0次
2023-04-18更新
|
692次组卷
|
5卷引用:四川省巴中市南江县南江中学2023届高三二模数学(理)试题
7 . 已知椭圆
的左、右焦点分别为
,
,左顶点为
,离心率为
,经过
的直线交椭圆于
两点,
的周长为8.
(1)求椭圆
的方程;
(2)过直线
上一点P作椭圆C的两条切线,切点分别为
,
①证明:直线
过定点;
②求
的最大值.
备注:若点
在椭圆C:
上,则椭圆C在点
处的切线方程为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8376a8a3dd42eaa0558501a3e2a2bdb4.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
①证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39b4ab8209e56bf6ece460b90c3f1b9.png)
备注:若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9656735f55e5de465e5667ba578d4e.png)
您最近一年使用:0次
8 . 设函数
,
.
(1)当
时,设
,求函数
的单调区间;
(2)若函数
有两个零点
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b31cbbe4d33302cf2ec6b0dbd5d437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffdd3fc86fae4c7ace0e9f6b7c8b6788.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d326596f3ec9ce391cd16ab3c213eaab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
9 . 若
,
,
,则a,b,c的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deff87f6de287ae5e0aad9552fdaa6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5e77de8b27a6957ab62d22391bc8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a861a957f68f2dd5460c8cdeb3f133.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 设函数
.
(1)当
时,设
,求函数
的单调区间;
(2)若函数
有两个零点
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cd93bca621d75e87f335d26a4bf7ef.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d326596f3ec9ce391cd16ab3c213eaab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3951a7bf1d9ca025aeef96c5c60411bd.png)
您最近一年使用:0次