名校
解题方法
1 . 设函数
是定义在
上的偶函数,若当
时,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/256e50bb-b0c7-4da0-b73d-1104e7d6a712.jpg?resizew=244)
(1)求当
时,函数
的解析式;
(2)画出函数图象,并求满足
的
的取值范围;
(3)若方程
有四个实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48350c9f896c18a64f27867ca81c9be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1789d58d5303fc5ef9ee6a0dee7c76ef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/256e50bb-b0c7-4da0-b73d-1104e7d6a712.jpg?resizew=244)
(1)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b12f2ff24c52fded1dfd0f0b6940a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)画出函数图象,并求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7072fcba028cb70e42a9f8a69c5e925e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2022-11-30更新
|
391次组卷
|
4卷引用:北京市朝阳区东北师大附属朝阳学校2023-2024学年高一上学期第二次质量检测数学试题
名校
2 . 已知函数
,其中
且
.给出下列四个结论:
①若
,则函数
的零点是
;
②若函数
无最小值,则
的取值范围为
;
③若
,则
在区间
上单调递减,在区间
上单调递增;
④若关于
的方程
恰有三个不相等的实数根
,则
的取值范围为
,且
的取值范围为
.
其中,所有正确结论的序号是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3cb969685ffe853a26c31010c733c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc91d92eb161e54def20b039d2089201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
④若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8ff8d31545883a5880ae40ffc4ebb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bacde908aec2c313978fc4309d82bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e0a0dde137e24c80d0afeec024f2b6.png)
其中,所有正确结论的序号是
您最近一年使用:0次
2022-03-01更新
|
640次组卷
|
5卷引用:北京市朝阳区2024届高三上学期数学期中模拟数学试题
名校
解题方法
3 . 已知函数
的图象如图所示,则函数
的图象可能是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/b919b7b1-7ce9-401a-a00e-847670d814a7.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8655cb378f71e1f0a612b313d578a4a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21496a5b296afc0e88171c4177af185e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/b919b7b1-7ce9-401a-a00e-847670d814a7.png?resizew=123)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-24更新
|
1836次组卷
|
7卷引用:北京市日坛中学2023-2024学年高一上学期期中考试数学试题