如图所示,抛物线与x轴交于点A(-1,0),B(3,0),与y轴交于点C(0,-3),以AB为直径作○M.如图所示,抛物线与x轴交于点A(-1,0),B(3,0),与y轴交于点C(0,-3),以AB为直径作○M,过抛物线上一点P作○M的切线PD,切点为D,
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![如图所示,抛物线与x轴交于点A(-1,0),B(3,0),与y轴交于点C(0,-3),以AB为直径作○M.如图所示,抛物线与x轴交于点A(-1,0),B(3,0),与y轴交于点C(0,-3),以AB为直径作○M,过抛物线上一点P作○M的切线PD,切点为D,](/uploads/image/z/14300161-25-1.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%28-1%2C0%29%2CB%283%2C0%29%2C%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9C%280%2C-3%29%2C%E4%BB%A5AB%E4%B8%BA%E7%9B%B4%E5%BE%84%E4%BD%9C%E2%97%8BM.%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%28-1%2C0%29%2CB%283%2C0%29%2C%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9C%280%2C-3%29%2C%E4%BB%A5AB%E4%B8%BA%E7%9B%B4%E5%BE%84%E4%BD%9C%E2%97%8BM%2C%E8%BF%87%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E4%B8%80%E7%82%B9P%E4%BD%9C%E2%97%8BM%E7%9A%84%E5%88%87%E7%BA%BFPD%2C%E5%88%87%E7%82%B9%E4%B8%BAD%2C)
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