设参数方程{x=a(t-sint),y=a(1-cost),确定y是x的函数,求dy/dx和(dy)^2/dx^2 设参数方程{x=a(t-sint),y=a(1-cost),确定y是x的函数,求dy/dx和(dy)^2/dx^2 发布时间:2024-12-24 14:24:43