(来学网)下列函数中,哪一个不是,f(x)=sin2x的原函数?
  • A.
    3sin(来学网)x+cos2x-3
  • B.
    sin(来学网)x+1
  • C.
    cos2x-3cos(来学网)x+3
  • D.
    (来学网)(1/2)cos2x+5/2