1 . 有下列几个说法:
(1)函数
在
上不是增函数;
(2)函数
在
上是减函数;
(3)函数
的单调递减区间是
;
(4)已知
在R上是增函数,若
,则有
.
其中正确说法的序号是___________ .
(1)函数
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/615694f6424943318b2e74f02a3512a6.png?resizew=96)
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/ed28cf30b9684a2ca8efb6d883ff0255.png?resizew=47)
(2)函数
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/9024654c80f84641add88d9f8c0a3294.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/a36c936f1c664da9af2fc8a7d9c28f7e.png?resizew=124)
(3)函数
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/985f73e0b48a4c2da3c63f6d730450fe.png?resizew=109)
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/44d4fd23c70b4848ae90e883af5a6b59.png?resizew=45)
(4)已知
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/c28e5c93ec0f4be7886599f727184502.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/fb568a48bc994fd69ad151ee49c0dba7.png?resizew=59)
![](https://img.xkw.com/dksih/QBM/2015/12/24/1572392016166912/1572392021901312/STEM/58248b20ea2e44178667ea041955ff48.png?resizew=188)
其中正确说法的序号是
您最近一年使用:0次
2 . 下列说法正确的是________ (只填正确说法序号)
①若集合
,则
;
②
是函数解析式;
③
是非奇非偶函数;
④设二次函数
,若
则
①若集合
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/67fd5e8c96244d2ba7baf0607451dcee.png?resizew=245)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/f165d548e7ba47488b4e994a3ea61188.png?resizew=145)
②
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/9d6664fe65924c299c91a1b29e01ca8c.png?resizew=132)
③
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/0ffed11544dd4fab90aa8a59c5cbdb45.png?resizew=96)
④设二次函数
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/3c6139bd7bf3418da7b3cb743c203a35.png?resizew=173)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/f548fdda537041019c4e86e2c0231d88.png?resizew=153)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/65f9a55b3576440d995e0e4a88d0fd69.png?resizew=96)
您最近一年使用:0次
10-11高一上·河北唐山·期中
解题方法
3 . 下列说法:①若
(其中
)是偶函数, 则实数
;
②
既是奇函数又是偶函数;
③已知
是定义在
上的奇函数,若当
时,
,则当
时,
;
④已知
是定义在R上的不恒为零的函数, 且对任意的
都满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754dcd5a8ca90e0a239951d8b8d1071d.png)
, 则
是奇函数.
其中所有正确说法的序号是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65945142d30134184e478bc623997154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978f4486f7dc6a282aecc5257132c517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d96ab75dab8aff30ee34d9b88c3d96.png)
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168163183a3d4663be45755f44676191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93649f8c2a15223061cdbba378934010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637ccb33543ce5bc8131b59d70127297.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754dcd5a8ca90e0a239951d8b8d1071d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61429212d64b96e2b7766a7a31caee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
其中所有正确说法的序号是
您最近一年使用:0次
12-13高一上·甘肃天水·期中
解题方法
4 . 下列5个判断:
①若
在
上增函数,则
;
②函数
只有两个零点;
③函数
的值域是
;
④函数
的最小值是1;
⑤在同一坐标系中函数
与
的图像关于
轴对称.
其中正确命题的序号_______
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4b369f86d13d19556d0ae4f7aece51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03db4ea1dcb63b22cf4e917df5db581e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c298e3b72856ab70082079d5105e8873.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c9d62d7737cda87b01fa06ae24ff98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2016168a68d0ab74a14b16a6b84c25f5.png)
⑤在同一坐标系中函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b161347f6a2fcfd9bf0acf1e8a03fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef9d69de06c1300c314c3c6623abb1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
其中正确命题的序号
您最近一年使用:0次
解题方法
5 . 对于函数
,若
(
)恒成立,则称
为函数
的一个“P数对”;若
是
的一个“P数对”,
,且当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
,关于函数
有以下三个判断:①k=4;②
在区间
上的值域是[3,4];③
.则正确判断的所有序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52b237697d16f22ea1b36e9bc92e9b2.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965166698496/1571965171884032/STEM/6bdb9260472a4b489bc3364e66fb3251.png?resizew=49)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965166698496/1571965171884032/STEM/3de33dabce1c4fa5b36dcad0fb66173d.png?resizew=36)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc8350b12974ffc8d06fce36d158f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0af419f4bc6f089e3304a477589d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58bbbdde60cf4f80c3ea6a1740edba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a033ac4907296218a05efce27de748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b434a9b41356aa5e866f7324dd2d5b43.png)
![](https://img.xkw.com/dksih/QBM/2015/1/15/1571965166698496/1571965171884032/STEM/73db4bfb3f5942a092df46f9c1e2a01f.png?resizew=69)
您最近一年使用:0次