1 . 若函数
是偶函数,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da41cc9ebcc0fc313a2f0f91ad732698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 若函数
在R上是单调递减的奇函数,则下列关系式成立的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 设函数
,给出以下四个命题:①当c=0时,有
成立;
②当b=0,c>0时,方程
只有一个实数根;③函数
的图象关于点(0,c)对称 ④当x>0时;函数
,
有最小值是
.
其中正确的命题的序号是
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961687187456/1571961692930048/STEM/5c4bc39f9bb64abb8bb8cb8ed2603577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a655e9faf731adf73e3bba2d5140ff.png)
②当b=0,c>0时,方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648fdad94958fa59e7cf5aaee15f9622.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961687187456/1571961692930048/STEM/4a8e9ab617d640e5ab7434ae971b4cb7.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961687187456/1571961692930048/STEM/5c4bc39f9bb64abb8bb8cb8ed2603577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be82ff27d98a09b97bde938919b767cf.png)
其中正确的命题的序号是
A.①②④ | B.①③④ | C.②③④ | D.①②③ |
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4 . 已知奇函数
当
时,
,则当
时,
的表达式是.
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332275200/STEM/e086e804f2e04509b3105303c8a505a9.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332275200/STEM/cf8812e3c6dd436082e4924ecb955598.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332275200/STEM/baae938e96124594b43cb1489f075a70.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332275200/STEM/befc5166b2ec441ebfbb4ca40c4164ff.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332275200/STEM/e086e804f2e04509b3105303c8a505a9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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11-12高三上·湖北黄冈·阶段练习
5 . 设
是周期为2的奇函数,当
时,
,
则
=
![](https://img.xkw.com/dksih/QBM/2011/12/28/1570637123715072/1570637128818688/STEM/ddd52708d671456a8fb2389a359a6a14.png)
![](https://img.xkw.com/dksih/QBM/2011/12/28/1570637123715072/1570637128818688/STEM/f0dd7ab80c3a4e36b83c86eebeda5c92.png)
![](https://img.xkw.com/dksih/QBM/2011/12/28/1570637123715072/1570637128818688/STEM/becb8e9e44bd44f59b09ee6410819ddf.png)
则
![](https://img.xkw.com/dksih/QBM/2011/12/28/1570637123715072/1570637128818688/STEM/586cbbd79b7943038129de6ca1a0920e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10-11高三·河南信阳·阶段练习
6 . 设定义域为R的函数
满足下列条件:①对任意
;②对任意
,当
时,有
,则下列不等式不一定成立的是
![](https://img.xkw.com/dksih/QBM/2011/12/24/1570632043888640/1570632048975872/STEM/85b21d92d66144ea8bf8cdb9de4f3b5d.png)
![](https://img.xkw.com/dksih/QBM/2011/12/24/1570632043888640/1570632048975872/STEM/526e2ce54731496fa1c52e324b97b42e.png)
![](https://img.xkw.com/dksih/QBM/2011/12/24/1570632043888640/1570632048975872/STEM/bf66d802433c4ffb9e261cb82d46c448.png)
![](https://img.xkw.com/dksih/QBM/2011/12/24/1570632043888640/1570632048975872/STEM/fe69bf550dd14daf94890ba85e34647c.png)
![](https://img.xkw.com/dksih/QBM/2011/12/24/1570632043888640/1570632048975872/STEM/ae0139361cf647358bf257bd928a2e12.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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11-12高三上·江西·阶段练习
解题方法
7 . 已知函数
,则不等式
的解集是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d498b2ebc4cce67a8b0d5f457144a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429da70f8efbfb2d445918e9c182434f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 函数
,
是
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332201472/STEM/56a7f2b53fe044d693cbde5a2d5da8c8.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965326745600/1571965332201472/STEM/054cb6b198a647c8afc041774cf82e53.png)
A.偶函数 | B.奇函数 | C.不具有奇偶函数 | D.与![]() |
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10-11高三上·江西吉安·开学考试
9 . 已知偶函数f(x)在区间
上单调递增,则满足f(2x-1)<f(
)的x取值范围是
![](https://img.xkw.com/dksih/QBM/2012/8/10/1570962306670592/1570962311766016/STEM/e70287dea2b449b9a842222bd6845d2d.png)
![](https://img.xkw.com/dksih/QBM/2012/8/10/1570962306670592/1570962311766016/STEM/6fb33b766abe4544beda11727698d648.png)
A.(![]() | B.[![]() | C.(![]() | D.[![]() |
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10 . 已知
是
上的奇函数,且
,当
时,则
,则![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/ef731d409ac24fd482d2ecedaf6b4716.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/42c692f4a0434791b0bdd52f8ac7850b.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/71b3ad59f91d456ba781c626f39584b6.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/dbba9dec4ed04130884c3c8e137d03c9.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/87b0aa0bf1604a69821ee8e093039d3b.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/fc423b379fa24e1cb38ef0939393056b.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/4cae8cfc0ff14252949ad49b7c66a5e0.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/ef731d409ac24fd482d2ecedaf6b4716.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944739479552/1571944744738816/STEM/42c692f4a0434791b0bdd52f8ac7850b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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