过点M0(-1,1)且与曲线2ex-2cosy-1=0上点(0,π/3)的切线相垂直的直线方程是:()
A:y-π/3=(/2)x
B:y-π/3=-(2/)x
C:y-1=(/2)(x+1)
D:y-1=-(2/)(x+1)
出自:基础知识