如图1,已知正方形OABC的边长为2,顶点A、C分别在x、y轴的正半轴上,M是BC的中点.P(0,m)是线段OC上一动点(C点除外),直线PM交AB的延长线于点D.(1)求点D的坐标(用含m的代数式表示);(2
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![如图1,已知正方形OABC的边长为2,顶点A、C分别在x、y轴的正半轴上,M是BC的中点.P(0,m)是线段OC上一动点(C点除外),直线PM交AB的延长线于点D.(1)求点D的坐标(用含m的代数式表示);(2](/uploads/image/z/10214873-17-3.jpg?t=%E5%A6%82%E5%9B%BE1%2C%E5%B7%B2%E7%9F%A5%E6%AD%A3%E6%96%B9%E5%BD%A2OABC%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA2%2C%E9%A1%B6%E7%82%B9A%E3%80%81C%E5%88%86%E5%88%AB%E5%9C%A8x%E3%80%81y%E8%BD%B4%E7%9A%84%E6%AD%A3%E5%8D%8A%E8%BD%B4%E4%B8%8A%2CM%E6%98%AFBC%E7%9A%84%E4%B8%AD%E7%82%B9%EF%BC%8EP%EF%BC%880%2Cm%EF%BC%89%E6%98%AF%E7%BA%BF%E6%AE%B5OC%E4%B8%8A%E4%B8%80%E5%8A%A8%E7%82%B9%EF%BC%88C%E7%82%B9%E9%99%A4%E5%A4%96%EF%BC%89%2C%E7%9B%B4%E7%BA%BFPM%E4%BA%A4AB%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9D%EF%BC%8E%EF%BC%881%EF%BC%89%E6%B1%82%E7%82%B9D%E7%9A%84%E5%9D%90%E6%A0%87%EF%BC%88%E7%94%A8%E5%90%ABm%E7%9A%84%E4%BB%A3%E6%95%B0%E5%BC%8F%E8%A1%A8%E7%A4%BA%EF%BC%89%EF%BC%9B%EF%BC%882)
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