如图1,在矩形ABCD中,动点P从点B出发,沿BC,CD,DA运动到点A停止,设点P的运动路程为x,
的面积为y,如果y关于x的函数图象如图2所示,则
的周长为_____
![](https://img.xkw.com/dksih/QBM/2021/5/28/2730510159028224/2784783688482816/STEM/4a641ebd-acce-4d44-b0cf-3802d0651fe8.png)
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![](https://img.xkw.com/dksih/QBM/2021/5/28/2730510159028224/2784783688482816/STEM/2d5d3a37-7981-40ed-bc60-7f13dc4ebf34.png)
20-21八年级下·江西赣州·阶段练习 查看更多[2]
江西省赣州市于都中学初中部2020-2021学年下学期八年级第二次月考数学试题(已下线)专题01 变量与函数(七大类型)(题型专练)-2023-2024学年八年级数学上册《知识解读·题型专练》(浙教版)
更新时间:2021-08-12 21:19:49
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【推荐1】如图(1),在矩形
中,动点
从点
出发,沿
运动至点
停止.点
运动的路程为
,
的面积为
,如果
关于
的函数图象如图(
)所示,则面积
的最大值是______ .
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【推荐2】如图1,在四边形
中,
,
.一动点P从点A出发,以
的速度沿A→B→C→D的方向不停移动,直到点P到达点D后才停止,已知
的面积S(单位:cm2)与点P移动的时间x(单位:s)的关系图象如图2所示,则点P从运动开始到停止一共用去的时间为 _____ s.(结果保留根号)
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【推荐1】如图,菱形
的对角线
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作
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,若菱形
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【推荐2】在如图平面直角坐标系中,若等边三角形
的顶点C关于x轴的对称点的坐标是
,则
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