—Would you mind picking up the last cigarette on the playground?
—_______. I'll do it right away.
A:Not at all
B:Of course
C:No way
D:Sounds good
已知曲线C1的参数方程为x=-2+10cosθy=10sinθ(θ为参数),曲线C2的极坐标方程为ρ=2cosθ+6sinθ.
将曲线C1的参数方程化为普通方程,将曲线C2的极坐标方程化为直角坐标方程;
函数fx=cos2x-12的最小正周期为( )