在矩形OABC中,已知A、C坐标为(4,0)和(0,2),D为OA中点,设P是角AOC平分线上的一个动点1)当P运动到与点B距离最小时,求经过O、P、D三点的抛物线解析式,2)设点E是(1)中抛物线的顶点,当点P运动到何
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![在矩形OABC中,已知A、C坐标为(4,0)和(0,2),D为OA中点,设P是角AOC平分线上的一个动点1)当P运动到与点B距离最小时,求经过O、P、D三点的抛物线解析式,2)设点E是(1)中抛物线的顶点,当点P运动到何](/uploads/image/z/14872576-40-6.jpg?t=%E5%9C%A8%E7%9F%A9%E5%BD%A2OABC%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5A%E3%80%81C%E5%9D%90%E6%A0%87%E4%B8%BA%284%2C0%29%E5%92%8C%280%2C2%29%2CD%E4%B8%BAOA%E4%B8%AD%E7%82%B9%2C%E8%AE%BEP%E6%98%AF%E8%A7%92AOC%E5%B9%B3%E5%88%86%E7%BA%BF%E4%B8%8A%E7%9A%84%E4%B8%80%E4%B8%AA%E5%8A%A8%E7%82%B91%EF%BC%89%E5%BD%93P%E8%BF%90%E5%8A%A8%E5%88%B0%E4%B8%8E%E7%82%B9B%E8%B7%9D%E7%A6%BB%E6%9C%80%E5%B0%8F%E6%97%B6%2C%E6%B1%82%E7%BB%8F%E8%BF%87O%E3%80%81P%E3%80%81D%E4%B8%89%E7%82%B9%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%E8%A7%A3%E6%9E%90%E5%BC%8F%2C2%29%E8%AE%BE%E7%82%B9E%E6%98%AF%EF%BC%881%EF%BC%89%E4%B8%AD%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E9%A1%B6%E7%82%B9%2C%E5%BD%93%E7%82%B9P%E8%BF%90%E5%8A%A8%E5%88%B0%E4%BD%95)
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