极坐标方程为ρcosθ-ρsinθ-1=0的直线与x轴的交点为P,与椭圆x=2c 发布时间:2017-05-01 23:53 │ 来源:www.tikuol.com 题型:解答题 问题: 极坐标方程为ρcosθ-ρsinθ-1=0的直线与x轴的交点为P,与椭圆 x=2cosθy=sinθ(θ为参数)交于A,B,求|PA|•|PB|.
题型:解答题 —You'd better complete the task within a day. Our boss will come to have a check tomorrow. —Are you kidding? That's _______. Only God can do it.[ ]A. out of question B. out of the question C. beyond question D. without question 查看答案