如图.已知在平面直角坐标系中.点 A(0,m),点 B(n,0),D(2m,n),且 m、n 满足(m﹣2)2+
=0,将线段AB向左平移,使点B与点 O重合,点C与点A对应.
(1)求点C、D的坐标;
(2)连接CD,动点P从点O出发,以每秒1个单位的速度,沿射线OB方向运动,设点P运动时间为t秒,是否存在某一时刻,使 S
PCD=4S
AOB,若存在,请求出t值,并写出P点坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cc096136e72e246f93e43da19c5c3e.png)
(1)求点C、D的坐标;
(2)连接CD,动点P从点O出发,以每秒1个单位的速度,沿射线OB方向运动,设点P运动时间为t秒,是否存在某一时刻,使 S
![](https://img.xkw.com/dksih/QBM/2019/6/13/2224737034133504/2225483669020672/STEM/5104c8070c1c45f0a10806aefaecdc5e.png?resizew=6)
![](https://img.xkw.com/dksih/QBM/2019/6/13/2224737034133504/2225483669020672/STEM/bd371ea635234c0d964c9414a94549bf.png?resizew=6)
![](https://img.xkw.com/dksih/QBM/2019/6/13/2224737034133504/2225483669020672/STEM/dbb661690ce64fc097a1e5e9b1ebaf9b.png?resizew=187)
更新时间:2019-06-14 16:21:01
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解答题-证明题
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【推荐1】如图,矩形
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②若点P为线段
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