1 . 给定函数
,
,
,用
表示
中的较大者,记为
.
例如,当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/97881cf5-255a-4113-9c0d-1cf512eaa9e7.png?resizew=302)
(1)用分段函数的形式表示该函数
,并画出函数
的图象;
(2)根据图象写出函数的单调递减区间和值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a5e4aceba071f70532dee61848cff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596043ca83b7fb8aed3167bd8a3fd9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b6cb2df3752f822d17d414c947ecfc.png)
例如,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ea64817023db3b4a0dc35d5f285aec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/97881cf5-255a-4113-9c0d-1cf512eaa9e7.png?resizew=302)
(1)用分段函数的形式表示该函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
(2)根据图象写出函数的单调递减区间和值域.
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20-21高一·江苏·课后作业
2 . 画出下列函数的图象:
(1)
; (2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527d4d847da9fe57bbdf646136e972d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad9b77bdf498ccb7bed3425c5e01407.png)
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