解题方法
1 . 已知函数
且
是定义域为
的奇函数
(1)若
,试判断
的单调性
(2)在(1)条件下,若
,不等式
恒成立,求实数
的取值范围
(3)若
,求
在
的最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f28d0e94930d4599bbb88757fed1f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e2dd7a988cc80530e739c22b2280.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f3df8bf24d2c68add3f3de3efc4147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在(1)条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0fd153871dfb101f21ea7fcb00792a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99091fbfb1cffa45db99f732cf0988e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
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解题方法
2 . 给出下列结论,其中正确的结论是( )
A.函数![]() ![]() |
B.函数![]() ![]() |
C.若![]() ![]() |
D.已知定义在![]() ![]() ![]() ![]() |
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解题方法
3 . 若
是
上的奇函数,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5215a578933ba72022450a6d3a37d14.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4b2770099206ec1a0a80a6f0b8f251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98add967fd15f23a2bb0e612ec74fad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5215a578933ba72022450a6d3a37d14.png)
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解题方法
4 . 已知
是奇函数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9203a657e03224916c010861f7a3ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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5 . 已知
是定义在
上的奇函数,在
上单调递增,
,那么
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2635c6e599f816c706e471a3c197d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72d20f1bf6d42731872b4554cf81a03.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 已知
,集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3346de67d89f6ed861f6bbed946c6422.png)
(1)当
时,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eceac03b1f703d7666d91f1fc952cfad.png)
(2)若
,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3346de67d89f6ed861f6bbed946c6422.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eceac03b1f703d7666d91f1fc952cfad.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3b9f8292d632874ed0f92bbd8df0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 下列说法正确的有( )
A.“![]() ![]() ![]() ![]() |
B.若命题“![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.已知![]() ![]() |
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8 . 计算下列各式的值
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c9cc2736674d38719997c62d249eba.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c9cc2736674d38719997c62d249eba.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c5672f195d34e9e59e0adee924f07b.png)
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解题方法
9 . 下列函数中,既是奇函数又在
上单调递减的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 已知函数
为偶函数,
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be315e528951120e7d551f654d2a1f5e.png)
(1)求函数
的解析式
(2)若方程
有4个不同的解,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be315e528951120e7d551f654d2a1f5e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21e362563a275ff488069ee91d4cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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