1 . 如图,
分别是矩形
的边
和
的中点,
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/7f16f0e7-d2ed-4307-85d0-b7b95939a3ed.png?resizew=183)
(1)若
,求:
的值;
(2)设
,试用
表示
;
(3)若
,
是线段
上的一动点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/7f16f0e7-d2ed-4307-85d0-b7b95939a3ed.png?resizew=183)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a468672a7acc80b40561724c3c7975f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c477184b1e9104bac22743ae1817231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fa2fcefaf3d8868da0cb52877c5247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436b63e793d6d39990341d29cf47f10.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9639896487e6cf18e8fd02d2a7ed2087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7ca0b1b361e8669118d5c990646234.png)
您最近一年使用:0次
2019-10-08更新
|
535次组卷
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3卷引用:上海市华师附天山中学2018-2019学年高二上学期学期向量单元测验卷