已知函数
是定义在实数集
上的不恒为零的偶函数,且对任意实数
都有
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c69303bd9eccb3ccb55c9e4cd03a8a3.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9fe77ff59191620cfebdca5932d1fd.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea43fc706d2375fdc92ea87f046ea25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c69303bd9eccb3ccb55c9e4cd03a8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9fe77ff59191620cfebdca5932d1fd.png)
更新时间:2019-10-28 09:13:00
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名校
【推荐2】已知
在
处有极值
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b735d04e727bc230a4904301a2ae124.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab8a46dc015bfbf0f5184cc6207c745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b735d04e727bc230a4904301a2ae124.png)
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解题方法
【推荐1】已知函数
是定义在
上的奇函数,且对于
,
,
时,都有
,且
,则不等式
的解集为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b1a4c131dde15df8597e03029459c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f4e3d638d8c389781d31af81953013a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83da8672ce26fff1dfb739d7942c1225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab478b6331b2468c15942dfac50beab9.png)
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【推荐2】已知函数
的定义域为R,且对任意
都有
,则下列结论一定正确的是_______ .
(1)
是偶函数;(2)
是周期函数;
(3)存在常数k,对任意
,都有
;
(4)对任意
,存在
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d200a7afe1e011713e14886a6887e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc245db806c822ae3cf8adc576bf780.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)存在常数k,对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c4874bcd4c05601821a4f49fc930f2.png)
(4)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b42c7c92c753d7f803ee7e7ceec59db.png)
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