解题方法
1 . 已知
,且
,则
的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc953ad4795035de2e50139272449e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd5dfdde9b0050bd9a29a0f9a9da331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8dc531505ec45b8eb8ae4fad88d69e8.png)
A.![]() | B.![]() | C.![]() | D.2 |
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名校
解题方法
2 . 已知函数
,则
从大到小顺次为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda8bac0cd98bf3763d1c07a10f72cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78024362a1297295e7542fa89026d3cb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
3 . 已知函数
有极值点在闭区间
上,则
的取值范围为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec127dd458b5930be70ae4938d90c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8682c07954e4ba88e5766b1e005f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知函数
,
,若关于
的方程
有两个不等实根
,且
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba052542ba06cf22818710941733732f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb4df9e51db0166f5a3c29e851f525c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd64906e52eba2dc956a651969d4912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c54705d32dc6820f1a90eec2225dcf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 若关于
的不等式
有且仅有一个整数解,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb8eea9b4ed6933543f7c515fd4939c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若函数
存在零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fc13d0e5024b0d85d67c2b469851e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 已知关于
的方程
且
有两个不等实根,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efc68a2b39cca953a09b3a92807f6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 某兴趣小组的几位同学在研究不等式
时给出一道题:已知函数
.函数
,当
时,
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49506c61cf5c61605f1cf90a440348cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839d60adc0333253aff4000673646bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21635ed9d41451f918e47451d7326465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a18be85a0cd3aff37be9ba7f1bdea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知函数
的导函数为
.
(1)讨论
的单调性;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8ec8682093cc949e7ef95e5dbeb417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf963762f098eabb1274f306d7e7f69.png)
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解题方法
10 . 已知函数
.
(1)当
时,求函数
极值;
(2)若对任意
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a355144856936e921ce27c4bf37c561.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a20457d180264f78d611dc7893d735.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1a913bc095fd52f8f41984b169c95b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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