名校
解题方法
1 . 已知函数
是定义在R上的偶函数,且当
时,
,现已画出函数
在
轴左侧的图象(如图所示),请根据图象解答下列问题.
(1)作出
时,函数
的图象,并写出函数
的增区间;
(2)写出当
时,
的解析式;
(3)用定义法证明函数
在
上单调递减.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becd598a11b876d858728161a7a09705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/16/760a3e90-bc9f-440d-9fa7-ceb6b375b365.png?resizew=165)
(1)作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)用定义法证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e10140ab3cdc13d710a65b2287c892b.png)
您最近一年使用:0次
2023-09-30更新
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4卷引用:江西省上饶市广丰中学2023-2024学年高一上学期10月月考数学试题
江西省上饶市广丰中学2023-2024学年高一上学期10月月考数学试题北京市东城区翔宇中学2022-2023学年高一上学期期中考试数学试题河北省邢台市第一中学2023-2024学年高一上学期第二次月考数学试题(已下线)5.4 函数的奇偶性(2)-【帮课堂】(苏教版2019必修第一册)
名校
2 . 已知函数
是定义在
上的偶函数,且当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/407a25d0-995c-4544-ade0-2d5151d7ef67.png?resizew=210)
(1)现已画出函数
在
轴左侧的图像,如图所示,请补出完整函数
的图像,并根据图象写出函数
的增区间;
(2)
为何值时,有4个
与之对应;
(3)解关于x的不等式
.
![](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/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5397ee1eb6d157f6ec1e7a878f8d16e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/407a25d0-995c-4544-ade0-2d5151d7ef67.png?resizew=210)
(1)现已画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43058c020b5886583a93206bef0847fa.png)
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