已知圆C经过P(4,-2),Q(-1,3)两点,且在y轴上截得的线段长为4,半径小于5. (1)求直线PQ与圆C的方程; (2)若直线l∥PQ,且l与圆C交于点A,B且以线段AB为直径的圆经过坐标原点,求直线l的方程
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![已知圆C经过P(4,-2),Q(-1,3)两点,且在y轴上截得的线段长为4,半径小于5. (1)求直线PQ与圆C的方程; (2)若直线l∥PQ,且l与圆C交于点A,B且以线段AB为直径的圆经过坐标原点,求直线l的方程](/uploads/image/z/1804767-15-7.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%86C%E7%BB%8F%E8%BF%87P%EF%BC%884%2C-2%EF%BC%89%2CQ%EF%BC%88-1%2C3%EF%BC%89%E4%B8%A4%E7%82%B9%2C%E4%B8%94%E5%9C%A8y%E8%BD%B4%E4%B8%8A%E6%88%AA%E5%BE%97%E7%9A%84%E7%BA%BF%E6%AE%B5%E9%95%BF%E4%B8%BA4%2C%E5%8D%8A%E5%BE%84%E5%B0%8F%E4%BA%8E5%EF%BC%8E+%EF%BC%881%EF%BC%89%E6%B1%82%E7%9B%B4%E7%BA%BFPQ%E4%B8%8E%E5%9C%86C%E7%9A%84%E6%96%B9%E7%A8%8B%EF%BC%9B+%EF%BC%882%EF%BC%89%E8%8B%A5%E7%9B%B4%E7%BA%BFl%E2%88%A5PQ%2C%E4%B8%94l%E4%B8%8E%E5%9C%86C%E4%BA%A4%E4%BA%8E%E7%82%B9A%2CB%E4%B8%94%E4%BB%A5%E7%BA%BF%E6%AE%B5AB%E4%B8%BA%E7%9B%B4%E5%BE%84%E7%9A%84%E5%9C%86%E7%BB%8F%E8%BF%87%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%2C%E6%B1%82%E7%9B%B4%E7%BA%BFl%E7%9A%84%E6%96%B9%E7%A8%8B)
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