已知某圆的极坐标方程为ρ2-42ρcos(θ-π4)+6=0.(1)将极坐标方程 发布时间:2017-05-02 00:07 │ 来源:www.tikuol.com 题型:解答题 问题: 已知某圆的极坐标方程为ρ2-42ρcos(θ-π4)+6=0.(1)将极坐标方程化为普通方程,并选择恰当的参数写出它的参数方程;(2)若点P(x,y)在该圆上,求x+y的最大值和最小值.(5分)
题型:解答题 单词拼写。1. It's so near. I can even(甚至)hear his _____ (呼吸).2. The teacher asks us to _____(背诵)this text. 3. Jimmy Li's songs are also _____(受欢迎)with the young people. 4. The old man is reading a _____(诗)at the party. 5. The cat is running to the tree _____(悄悄地). 查看答案