1 . 已知函数
在
上是偶函数,对任意
都有:
,
,
且
时,
,给出如下命题:①函数
在
上为增函数;②直线
是
图象的一条对称轴;③点
是
的对称中心;④函数
在
上有四个零点.其中所有正确命题的序号为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e68fe28808a08af000c19643a2dc67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338ff37bebb2000b079ff47b049cb20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698cf53f76a1d637dfe2732d0a866eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882c36d09632b85edc6ba2059052a741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cc033406da2cdd342308972c6701f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ac55c5a8ad17e77e16e842af460186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babe9b9725844b213b5243e1c7d98216.png)
您最近一年使用:0次
2 . 已知函数
,有下列4个结论:①函数
的图像关于
轴对称;②存在常数
,对任意的实数
,恒有
成立;③对于任意给定的正数
,都存在实数
,使得
;④函数
的图像上存在无数个点,使得该函数在这些点处的切线与
轴平行;其中,所有正确结论的序号为_________ .
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/71afa419beaf40d1a751ac4b6428b593.png?resizew=92)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/f5f16b0d68a34afb8eaaadd3160e57ab.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/d577e5799da64d4da4fb0f48ccb87f1f.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/c050589bd5c140ef9f30c5743038edd1.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/e71c97bf72ff4e2c9a715a5e059cb9bb.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/6250dddb53d44b30a9a481e921759949.png?resizew=104)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/44aff5e377104fca82dede642c971b3f.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/ccefe25c67814ed385c57687e7ea1d75.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/30082ea7b00e4d7590ea1b0ebf625368.png?resizew=76)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/f5f16b0d68a34afb8eaaadd3160e57ab.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/e71c97bf72ff4e2c9a715a5e059cb9bb.png?resizew=14)
您最近一年使用:0次
2017-02-08更新
|
325次组卷
|
2卷引用:2017届山东陵县一中高三理12月月考数学试卷
3 . 给出下列说法:
①集合
与集合
是相等集合;
②若函数
的定义域为
,则函数
的定义域为
;
③函数
的单调减区间是
;
④不存在实数
,使
为奇函数;
⑤若
,且
,则
.
其中正确说法的序号是
①集合
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/cd34022523914fba86ff3fa5858afe26.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/6528e2cbc2b640c69bf8c02cfec55091.png)
②若函数
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/08db162e7f95477d98e8185ae4dea2b8.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/037495bc0acb4cc2ab562b95270daa98.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/58ff37f49e9d4d4285c0eadb9db7b294.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/7865ddaed09943848cc714c966a6533b.png)
③函数
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/7081ea1cb6aa4d8785a8e5146cdcf6e9.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/709eadb73d644a5f90ac18c1b5e800de.png)
④不存在实数
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/aae2b9c9d85a47168a8f6278cb1f76e2.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/f0726200c50148f8b82bb4c3d1b3f594.png)
⑤若
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/e955ed8355234190b66f5d2f0062470e.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/3c8887c6dadb45d5b360a5fc68430b67.png)
![](https://img.xkw.com/dksih/QBM/2017/1/9/1619446775095296/1619446775365632/STEM/0dabe0d847ea4497bbf4142f4aa81c43.png)
其中正确说法的序号是
A.①②③ | B.②③④ | C.①③⑤ | D.①④⑤ |
您最近一年使用:0次
解题方法
4 . 有以下的五种说法:
①函数f(x)=
的单调减区间是(﹣∞,0)∪(0,+∞)
②若A∪B=A∩B,则A=B=![](https://img.xkw.com/dksih/QBM/2016/3/17/1572542587281408/1572542593376256/STEM/1f3e2d71089c435fa14b6970bf580657.png?resizew=13)
③已知f(x)是定义在R上的减函数,若两实数a、b满足a+b>0,则必有f(a)+f(b)<f(﹣a)+f(﹣b)
④已知f(x)=
的定义域为R,则a的取值范围是[0,8)
以上说法中正确的有_____ (写出所有正确说法选项的序号)
①函数f(x)=
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572542587281408/1572542593376256/STEM/f8d37a811e36434f8629b7529deb0bf2.png?resizew=10)
②若A∪B=A∩B,则A=B=
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572542587281408/1572542593376256/STEM/1f3e2d71089c435fa14b6970bf580657.png?resizew=13)
③已知f(x)是定义在R上的减函数,若两实数a、b满足a+b>0,则必有f(a)+f(b)<f(﹣a)+f(﹣b)
④已知f(x)=
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572542587281408/1572542593376256/STEM/9441350eda1b42b89d5e8aede7e05af3.png?resizew=89)
以上说法中正确的有
您最近一年使用:0次
5 . 定义
在上的偶函数
,满足:
,且在
上是增函数,下面关于
的判断正确的是__________ (填序号 ).
①
是周期函数; ②
的图像关于直线
对称;
③
在
上是增函数; ④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4939bc5c63ac944dbb3da3c5fa20c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a50188f84f379b3d0418c54cbade7d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
①
![](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/9b384412acba251d87902ab928902f16.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44284ff1ea50429a0610e13363be6080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdaf163a76e3d73f2aae4cd1767d5b2.png)
您最近一年使用:0次