14-15高一上·河北唐山·期中
1 . 设全集U是实数集
,
,
都是U的子集,则图中阴影部分所表示的集合是
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947038875648/1571947044331520/STEM/171de0f3cf15451b88815c6867095ac5.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947038875648/1571947044331520/STEM/1330a541f8c04c19a9a179fb56bb0a15.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947038875648/1571947044331520/STEM/665edb0f3f3e4dd6bb249453d5c147fd.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947038875648/1571947044331520/STEM/b800b36ec83f486aa0fbe9a6220da7e5.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947038875648/1571947044331520/STEM/171de0f3cf15451b88815c6867095ac5.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() |
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2014·河北唐山·一模
解题方法
2 . 已知
,
,规定:当
时,
;当
时,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e47d77aa8a3cff15aaa7e1e893c761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e810f9342b6a3eff8fb08c0eb37b1963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511684e961944070619c3605009bcf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7df5b1f184cc77a990d245adedf84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efdefbe20d66c8e7785636af3f10acab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f472f61cf8402e275cab632475dedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
A.有最小值![]() | B.有最大值1,无最小值 |
C.有最小值![]() | D.有最大值![]() |
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