名校
1 . 已知
,
为函数
的零点,
,下列结论中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2090a6dfcd0587e76711a41935664a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
A.![]() | B.若![]() ![]() |
C.![]() | D.a的取值范围是![]() |
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2 . 已知函数
,
.
(1)若
在区间
上不单调,求
的取值范围;
(2)已知关于x的方程
在区间
内有两个不相等的实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1327cec2337e6c2394de386ffc7a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e4853570f29bdbff47a8a89a06452c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 对于函数
,若
,则称x为
的“不动点”;若
,则称x为
的“稳定点”.若函数
的“不动点”和“稳定点”的集合分别记为A和B,即
,
.
(1)求证:
;
(2)若
,函数
总存在不动点,求实数c的取值范围;
(3)若
,且
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec6e3551a703676ea0dd20d538db32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bf91f31613ce80bba22a49862db03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84fb76793cf9f354f574ad9b881f98a0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ef395530f8dbf772e621d5f9956c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dbe8188e8552968d94b6b10ae62aa7.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ac3b503ea16f176802c92cca968d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d02e5de0c92487382f4b98376e9740.png)
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解题方法
4 . 已知函数
则方程
的根的个数可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012e077e84968e404988333e6957372b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d63ff67ad6612c88dbd398c1004ce0d.png)
A.6 | B.5 | C.4 | D.3 |
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解题方法
5 . 已知函数
,
,若
与
图象的公共点个数为
,且这些公共点的横坐标从小到大依次为
,
,…,
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2cf4fb65d9d4ea9ab86b542f1952e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391e64453fa47903c5b71260069670bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/3282e5fde4ae53fcb1bb072a685304c9.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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6 .
,其中
表示x,y,z中的最小者,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43893c9340075a5256d98e4608f56c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ef25cf4dcf2e053057ceb3a16e23ca.png)
A.函数![]() |
B.若![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
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解题方法
7 . 设函数
的定义域为
,且满足
,当
时,
.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4eff3125c5e63a994ba1ad5be58e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339b85cca0100adc23472c143f9a5a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c81f23e3d1b522e9576583d9b1a330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb01547524519243075bc794b3ea76fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86046372ba127b0bbf4c917d0668a679.png)
A.![]() |
B.当![]() ![]() ![]() |
C.![]() |
D.方程![]() |
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8 . 对于函数
和
,设
,若存在
,使得
,则称
与
互为“零点相邻函数”.若函数
与
互为“零点相邻函数”,则实数
的值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50af4f4b47d96b22855e8cffebc5646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac944968625853364eb2c655fcb78ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ace3b540a12d5b6f3150fd158ce35fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ec851189d66f02e709d7c004219849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知正实数
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19d73fbfaf8e3f5f33abaeb3dc82c38.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 定义在R上的函数
满足
;且当
时,
.则方程
所有的根之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796bde3976c69eb715d1e893ce7c62ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0336b97e35246b2ea7147cbc6e23a238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0e996449d19297498c5acc7044038b.png)
A.14 | B.12 | C.10 | D.8 |
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