名校
1 . 已知在R上单调递增的函数
满足
.
(1)解不等式
;
(2)若
在
,
上恒成立,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8769364a88f04d7231d265365354f86.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2525863e2cfe37072f73ef68e05cb9a6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5920c0dae1d8defa9c9ab682894178ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4fba6db52ebca981f59fb0934d6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8326eccb6fccce4cad9ff889bf0febbe.png)
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解题方法
2 . 某同学在研究函数
|的性质时,联想到两点间的距离公式,从而将函数变形为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a30966eb1bea9f13aa5e0c0837c222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0142e365dc4df08e6c18a1a330c89ba5.png)
A.函数![]() ![]() ![]() |
B.函数![]() ![]() |
C.函数![]() ![]() |
D.方程![]() |
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解题方法
3 . 已知a,b∈R+且
,那么下列不等式中,恒成立的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 对于函数
,若在定义域内存在实数x,满足
,则称
为“局部奇函数”.
(1)若
是定义在区间
上的“局部奇函数”,求实数m的取值范围;
(2)若
为定义域R上的“局部奇函数”,求实数m的取值范围.
注:函数
在区间
上单调递减,在区间
上单调递增.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1db6c94b94afc372212a81cc1f4dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395c2175d91d5eaac4c4b33ecfeb0f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ede5d4a926f44af59258c96319a34d0.png)
注:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1305b9abebd7bef3171486df157286b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0109d06b8be2e402b5ffbb0aeb501009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
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解题方法
5 . 已知
为常数,函数
为奇函数.
(1)求
的值;
(2)若
,试判断
的单调性(不需证明);
(3)当
时,若存在
,使得
能成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e3b8150bd08ff94780e9e83aa0a341.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24aa16b780156e18f12baa2b8ee0f9a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a685f3531c5dab91b5eedc0a6dec0d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 已知函数
,
(1)若
,
为偶函数,求a,b,c的值;
(2)若对任意实数x,不等式
恒成立,求
的取值范围;
(3)当
时,对任意
,
,恒有
,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaf5cc433b72a9552b464c1a93a191b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96331bd2bd034e6689f951b9416ceedb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548636534994cd465dfc7bf7dd41505b.png)
(2)若对任意实数x,不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831b795b68ce2f7637c5138cbf983923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eaf5dc6cb26e49f0ab9a7f610ee87ec.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff565afbddafe8625ef376d7eb3fa649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608f663c358464a380cb503e362c2a2b.png)
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解题方法
7 . 已知函数
在
上为增函数.且
,
.
(1)求
的值;
(2)若
在
函数是单调函数,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46f5443b120789703d3092f52b78a90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744ee15af01a8e7c0f126edb5f68132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863ce8ed526a79d4da489c45c664f28d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138472ac217ce3f838b18ce39b39b869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
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解题方法
8 . 有下列命题:
①在函数
的图象中,相邻两个对称中心的距离为
;
②函数
的图象关于点
对称;
③“
且
”是“
”的必要不充分条件;
④已知命题p:对任意的
,都有
,则
是:存在
,使得
;
⑤在△ABC中,若
,
,则角C等于30°或150°.
其中所有真命题的个数是( )
①在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e920e45bf707293cd71cd87ba9f25ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6efe4dcec921254aaf23bd08b1a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43f0f4dccb727c6a655ff483f5f843d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec66b3436594131a07fee9e3fea6d9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc2eeaca8a8ce4bcce2bff011a11bf.png)
④已知命题p:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05611fbe265ef9e3d4a8b1821bcbc1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e67e1423322138cfc68c5c85a6215d.png)
⑤在△ABC中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc4681e95774e835cf309eb822d5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab4b62df4c61610ad23d5f504950383.png)
其中所有真命题的个数是( )
A.1 | B.2 | C.3 | D.4 |
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9 . 定义两种运算:
,
,则函数
的解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ee32198a31cbac09a2954dd18907c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98af7e96a5bc2bbbaed8c10de0e2f1be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c457b331f374d655ffba2b6054d170d.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
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10 . 设函数
的导函数为
,满足
,则当
时,
与
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee97d8c31054a7150199058bc7b45cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9470e429c8833930e9294e2638648784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f484115a9df1b6060d6b14df85c6f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc1800c5f40250555789cc8a41aad3a.png)
A.![]() | B.![]() | C.![]() | D.不能确定 |
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