已知抛物线y=ax2+bx+c与y轴交于点A(0.3),与X轴交于点B(1.0)c(5.0)两点(1)求抛物线的解析式(2)若点D为线段的一个三等分点,求直线DC的解析式(3)若一个动点P自OA的中点M出发,先到达X
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![已知抛物线y=ax2+bx+c与y轴交于点A(0.3),与X轴交于点B(1.0)c(5.0)两点(1)求抛物线的解析式(2)若点D为线段的一个三等分点,求直线DC的解析式(3)若一个动点P自OA的中点M出发,先到达X](/uploads/image/z/8797740-60-0.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax2%2Bbx%2Bc%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%EF%BC%880.3%EF%BC%89%2C%E4%B8%8EX%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9B%EF%BC%881.0%EF%BC%89c%EF%BC%885.0%EF%BC%89%E4%B8%A4%E7%82%B9%EF%BC%881%EF%BC%89%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%882%EF%BC%89%E8%8B%A5%E7%82%B9D%E4%B8%BA%E7%BA%BF%E6%AE%B5%E7%9A%84%E4%B8%80%E4%B8%AA%E4%B8%89%E7%AD%89%E5%88%86%E7%82%B9%2C%E6%B1%82%E7%9B%B4%E7%BA%BFDC%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%883%EF%BC%89%E8%8B%A5%E4%B8%80%E4%B8%AA%E5%8A%A8%E7%82%B9P%E8%87%AAOA%E7%9A%84%E4%B8%AD%E7%82%B9M%E5%87%BA%E5%8F%91%2C%E5%85%88%E5%88%B0%E8%BE%BEX)
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