1 . 已知函数
.
(1)若曲线
在
处的切线与
轴垂直,求
的极值.
(2)若
在
只有一个零点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2f49cb8095d79914f4c1a8f75dfd75.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知函数
.
(1)当
时,若直线
与曲线
相切,求
;
(2)若直线
与曲线
恰有两个公共点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db6dc5779e96494ef7f1c8f973ea86b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634cfbfa72c819314962cc08fc29ac15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f590ca2bde213675bffe68ed4017f957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
3 . 设
,已知函数
的两个不同的零点
、
,满足
,若将该函数图象向右平移
个单位后得到一个偶函数的图象,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f9a5a76582f038a8875d5c8c1b98052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ace9551a858f805975f40dc2853136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88dc86ad6c966febbad5cb0657dd649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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4 . 对于函数
,若存在实数
,使
,其中
,则称
为“可移
倒数函”,
为“
的可移
倒数点”.设
,若函数
恰有3个“可移1倒数点”,则
的取值范围( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a9d2955a061200043e15bbe1e912c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78fbecca12ee62538020483fd55a2109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc221f5c1f3a4ece732bc96398d2d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知函数
的零点从小到大分别为
.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9332b001e589304d3aaac8d0139a75b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d767cba8f37ccd4b40efec40dd430e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07aa287be7947642c26abd906629dfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
A.![]() | B.![]() | C.1 | D.2 |
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6 . 已知函数
.
(1)求函数
的单调递增区间;
(2)若函数
有且仅有三个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a944f056d09785e9e3e859601bee6ae.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af861abcb2667803bb5985c0ae55a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解题方法
7 . 已知函数
.则下列说法中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed36ef4b0b0ed8ea538bc0f200463720.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.![]() |
D.当![]() ![]() |
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解题方法
8 . 已知函数
在区间
上有且仅有三个零点,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833695d7d22c5354304d81dfa42b9daa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71163f419555f2ed76075c8ff659fbfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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真题
9 . 若
.
(1)
过
,求
的解集;
(2)存在
使得
成等差数列,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b04f2b67e3c95a11d844e3d54e8504.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081cd41dab0f2a8f84b0e9f1df4843fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c25db143eb14b7b6997047aa3cca12.png)
(2)存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e47518677c6d5041e3741d83701320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
10 . 若曲线C的切线l与曲线C共有n个公共点(其中
,
),则称l为曲线C的“
”.
(1)若曲线
在点
处的切线为
,另一个公共点的坐标为
,求
的值;
(2)求曲线
所有
的方程;
(3)设
,是否存在
,使得曲线
在点
处的切线为
?若存在,探究满足条件的t的个数,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a4e961d362e7454658bad29750a1cd.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48befa5d90fafd8bfdb6c90fd241ebfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567c7a1edad2de8d71a06eb76c8b52b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad42625f296d2a4b65180e2f7b776beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680c514271ab4a9c8424873bd5e2b154.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d395a5e66576b31ba39a2abcecc26d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a442bb3027296d45df4b72609b5d02.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d71f56ef6906bc37ca312051d97d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce71911f990a0d69b54c6ca453ac9a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56849f3da518eff9bf32c7149f9d49b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0520cf6db4ec82dc0e092f2aa0036427.png)
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