名校
1 . 已知定义
在上的奇函数
满足
且
,则方程
在区间
内整数根有
![](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/3170408d3830e3eecd4fc0ecf5aaffb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb969de98e32f56f9610c213823489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3a47d1055da289b63dae6deecf0c44.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 下列叙述正确的有____ (将你认为所有可能出现的情况的代号填入横线上)
①集合
的非空真子集有6个;
②集合
,集合
,若
,则对应关系
是从集合
到集合
的映射;
③函数
的对称中心为
;
④函数
对任意实数
都有
恒成立,则函数
是周期为4的周期函数.
①集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4216159b10fe5eca38c738cb7539fd5.png)
②集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6e6405e2ecdfca6d442c5dc1c2f86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c680a1749ca2becc4ff99d87f8ea9ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d162a31405180be2bf7cf877540336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0461ede948254f8c5410a77a150577.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b50cc70f437e77f2186e93535036ab8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
解题方法
3 . 若对正常数
和任意实数
,等式
成立,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0a88281d6e55ba669a9ec184a3186b.png)
A.函数![]() ![]() |
B.函数![]() |
C.函数![]() ![]() |
D.函数![]() |
您最近一年使用:0次