1 . 设
是可导函数,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a8a095683d86d2cdf50d8458158df5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01cdb4a84f02a75eb447b54f73f7df6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f24ffa0098d32fedb0a1381508860d.png)
(1)当
时,求函数
在
处的切线方程;
(2)若
时,不等式
恒成立,求实数
的取值范围;
(3)讨论
在区间
上的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f24ffa0098d32fedb0a1381508860d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f1ce70e2a21049b7f6afd344128d2f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901ffd1071fce5da6460f1d6606bd147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
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解题方法
3 . 如果一条双曲线的实轴和虚轴分别是一个椭圆的长轴和短轴,则称它们为“孪生”曲线,若双曲线
与椭圆
是“孪生”曲线,且椭圆
,
(
分别为曲线
的离心率)
(1)求双曲线
的方程;
(2)设点
分别为双曲线
的左、右顶点,过点
的动直线
交双曲线
右支于
两点,若直线
的斜率分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b76320e8e5743040720af4bcc630412.png)
①是否存在实数
,使得
,若存在求出
的值;若不存在,请说明理由;
②试探究
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b2762a307466ec370a4312a8eb48d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620cf5da623d1ce75f773bfea7ee3ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5549fb8f325a43dc46c6f69aab6840cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b5e91339a5d06ed529101eafe40c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddfa25e097562b856ddd5e7c0758ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b76320e8e5743040720af4bcc630412.png)
①是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50dcab7db08b633969e40a79b6b9d64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
②试探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5c7ebfee46adf2f006d10d016e2270.png)
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4 . 已知函数
.
(1)求不等式
的解集;
(2)求过点
且与曲线
相切的切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56add7a397d2a4bbe9fc06028dd10d8f.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76cc67e8c1402be68597c1d59b073bf4.png)
(2)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d55bed96da7c7f4ec234a17043310c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff97f233b88f7db460af8a8d1018bd8.png)
(1)求函数
在点
处的切线方程;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff97f233b88f7db460af8a8d1018bd8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
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6 . 设函数
是定义在
上的可导函数,其导函数为
,且有
,则不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7fc858ab3d3ecd62747b97eafdf94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f5e9be0f9b920e5fb165d945c80c6d.png)
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解题方法
7 . 已知圆
上恰有3个点到双曲线
的一条渐近线的距离为1,则该双曲线的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f581d0a15670dfbbcf1f97d37d111810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
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8 . 英国著名物理学家牛顿用“作切线”的方法求函数零点:如图,在横坐标为
的点处作
的切线,切线与
轴交点的横坐标为
;用
代替
重复上面的过程得到
;一直下去,得到数列
,叫作牛顿数列.若函数
,
且
,
,数列
的前
项和为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba67402923883d8caf7bfe584afedbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5f8457dde8682c05f3bf3737e485b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0123c4a3d497952ac6a5d0a54a1866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() | B.数列![]() |
C.数列![]() | D.![]() |
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解题方法
9 . 已知抛物线
,
为抛物线
上的一个动点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.过点A与抛物线只有一个公共点的直线有且仅有一条 |
B.动点![]() ![]() ![]() |
C.动点![]() ![]() ![]() |
D.过![]() ![]() ![]() ![]() ![]() ![]() |
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10 . 已知抛物线
,过抛物线
焦点的直线交抛物线
于
两点,交圆
于
两点,其中
位于第一象限,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583703e23366d09b9ac74c9e51abe587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b2cceff3976c7c0ed4f4cbda4165b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660d5058261473b6ccb81f229f640da6.png)
A.2 | B.3 | C.4 | D.5 |
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