名校
解题方法
1 . 函数
,关于函数
的零点情况有下列说法:
①当
取某些值时,无零点; ②当
取某些值时,恰有1个零点;
③当
取某些值时,恰有2个不同的零点; ④当
取某些值时,恰有3个不同的零点.
则正确说法的全部序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24bd5843cbfaff1885592a83275ad7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2853174cf50c71d58b7d57d7048088.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
则正确说法的全部序号为
您最近一年使用:0次
2024-03-27更新
|
168次组卷
|
2卷引用:北京市第一六六中学2023-2024学年高一上学期数学期末模拟试卷
名校
2 . 已知
,给出以下几个结论中正确结论的序号为__________ .
①
的最小正周期为
; ②
是偶函数; ③
的最小值为
;
④
在
上有4个零点; ⑤
在区间
上单调递减.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae394c96b25a64cbb2432bde3ebe949d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.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/c9db9373e74ecf5d63ad98afe66aa4ba.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5553f71f343e2fcbafbaaf42ef8ce8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52fb6144586628a7b2d42e79dd2dfb5.png)
您最近一年使用:0次
2023-05-20更新
|
390次组卷
|
4卷引用:北京市东城区北京景山中学2022-2023学年高一下学期期中考试数学试题