过点A(-2,-4)作倾斜角为45°的直线l交抛物线y^2=2px(p>0)于点P1、P2,若|P1P2|^2=|AP1|等过点A(-2,-4)作倾斜角为45°的直线l交抛物线y^2=2px(p>0)于点P1、P2,若|P1P2|^2=|AP1|·|AP2|,求实数p的值.(要过程)
问题描述:
过点A(-2,-4)作倾斜角为45°的直线l交抛物线y^2=2px(p>0)于点P1、P2,若|P1P2|^2=|AP1|等
过点A(-2,-4)作倾斜角为45°的直线l交抛物线y^2=2px(p>0)于点P1、P2,若|P1P2|^2=|AP1|·|AP2|,求实数p的值.(要过程)
答