名校
解题方法
1 . 已知
,对任意的
,不等式
恒成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e097722265f5ea129ff0417520f859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
2 .
,均有
成立,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63bd2b9a23b2970608a656a424eb0650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9691a6cb272be20caefcafcc1acceac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
3 . 定义在
上的函数
满足
,
(若
,则
,c为常数),则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0a028f1d7bffc087f345909ddbb498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3471484b64504fc545398f52be830010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4915a7b17389ab1238077f4c4ee8f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fa3246d1f5f3859c61f03f3387cd0a.png)
A.![]() |
B.![]() ![]() ![]() |
C.![]() |
D.若![]() ![]() ![]() |
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名校
解题方法
4 . 若不等式
在
上恒成立,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffcfff3f9f46e07ec6b88b3e7bde90e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.1 | D.![]() |
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名校
5 . 不等式
恒成立,则实数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d115c5b723267d593b857558d30e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
6 . 已知函数
,若
恒成立,则正实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1034ed0a5566c030ca14f2f95b82692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
7 . 已知函数
的导函数为
,且
,当
时,
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91770acb583f05c3ead767d247be034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d09afb1e101b1556179200f9a59d23a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12e34de335c69e51876e9447659aa40.png)
A.![]() | B.![]() |
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8 . 已知函数
,若存在实数
,
,
且
,使得
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec44311106711d4245d1adb4d12a69b7.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e45e961dd36b8f85703c91f248da3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1035c56842f3dbfd9ea26d899838b7.png)
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9 . 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)
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10 . 设动直线
与函数
,
的图象分别交于点
,已知
,则
的最小值与最大值之积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1fc40e64ec427b41693c21c20890bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c982eeb9b2a3d426a7aa70a0d3a91c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a49b0d7aedc593a3e87fbab7c31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f0c11fcf4c537bdf8982b91359f098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
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