若f′(cos(来学网)x)=sinx,则f(x)等于:
  • A.
    (1/3)(1-x)(来学网)+c
  • B.
    (2/3)(1-x)(来学网)+c
  • C.
    -(1/3)(1-x)(来学网)+c
  • D.
    (1-x)(来学网)+c