过点M(来学网)(-1,1)且与曲线2e-2cosy-1=0上点(0,π/3)的切线相垂直的直线方程是:
  • A.
    y-π/3=((来学网)/2)x
  • B.
    y-π/3=-(2/(来学网))x
  • C.
    y-1=((来学网)/2)(x 1)
  • D.
    y-1=-(2/(来学网))(x 1)