在
中,边
的长与
边上的高的和为8,当
面积最大时,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
A.4 | B.8 | C.2 | D.无法确定 |
更新时间:2023-11-08 21:45:04
|
【知识点】 图形问题(实际问题与二次函数)
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【推荐1】如图,一边靠墙(墙足够长),其他三边用
长的篱笆围成一个矩形
花园,这个花园的最大面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/e4202d44-eae8-4606-8429-520c3b9d0aff.png?resizew=142)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
名校
【推荐2】设
、
、
为实数,且
,抛物线
与
轴交于
、
两点,与
轴交于点
,且抛物线的顶点在直线
上.若
是直角三角形,则
面积的最大值是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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A.1 | B.![]() |
C.2 | D.3 |
您最近一年使用:0次