名校
解题方法
1 . 设矩形
的周长为
,其中
,如图所示,把它沿对角线
对折后,
交
于点
.设
,
.
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642258797117440/2643643998265344/STEM/2043228943754950ad88f1d77487c8a6.png?resizew=199)
(1)将
表示成
的函数,并求定义域;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9199a3de404cb13ae7710f73db5c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2633a6f46b0847158eebb05c743561aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422714c2c8f13e3a0e9d30b1a0164b9.png)
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642258797117440/2643643998265344/STEM/2043228943754950ad88f1d77487c8a6.png?resizew=199)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
您最近一年使用:0次
2021-01-25更新
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415次组卷
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2卷引用:江苏省常州市教育学会2020-2021学年高一上学期期末数学试题