如图1,在长方形
中,动点P从点B出发,沿
方向匀速运动至点A停止.已知点P的运动速度为
,设点P的运动时间为
,
的面积为
,若y关于x的函数图象如图2所示,则长方形
面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/a581903d-6904-4854-93af-4e0b4e4db254.png?resizew=325)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc9477c267b169bafbe5ccd24e7f6c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767ed77aa52997d3164edc3dd655751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c319236e9a0dfeb6bf5233cd689e49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/a581903d-6904-4854-93af-4e0b4e4db254.png?resizew=325)
A.20 | B.28 | C.48 | D.24 |
22-23八年级上·安徽亳州·阶段练习 查看更多[6]
安徽省涡阳高炉学校2022-2023学年八年级上学期数学第一次月考试卷(已下线)专题19.1 变量与函数(知识解读)-2022-2023学年八年级数学下册《同步考点解读·专题训练》(人教版)(已下线)第11讲 变量与函数-【暑假自学课】2023年新八年级数学暑假精品课(北师大版)(已下线)第01讲 变量与函数(知识解读+题型精讲+随堂检测)-2023-2024学年八年级数学上册《知识解读·题型专练》(浙教版)(已下线)第01讲 变量与函数(知识解读+题型精讲+随堂检测)-2023-2024学年八年级数学上册《知识解读·题型专练》(苏科版)(已下线)第01讲 变量与函数(知识解读+达标检测)-2023-2024学年八年级数学下册《知识解读·题型专练》(人教版)
更新时间:2022-10-30 12:51:30
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【推荐1】如图(1),
中,
,
是中线,点
从点
出发,沿
的方向以
的速度运动到点
.图(2)是点
运动时,
的面积
随时间
变化的图象,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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A.2 | B.![]() | C.![]() | D.![]() |
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【推荐2】如图1,在
中,
,已知点P在直角边AB上,以
的速度从点A向点B运动,点Q在直角边BC上,以
的速度从点B向点C运动.若点P,Q同时出发,当点P到达点B时,点Q恰好到达点C处.图2是
的面积
与点P的运动时间
之间的函数关系图像(点M为图像的最高点),根据相关信息,计算线段AC的长为( )
![](https://img.xkw.com/dksih/QBM/2022/6/1/2992111886393344/2994872692858880/STEM/4f33c080-daec-43a7-8906-4f16fd08e78c.png?resizew=397)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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