(来学网)函数f(x)=10arctanx-3lnx的极大值是:
  • A.
    (来学网)10arctan2-31n2
  • B.
    (来学网)(5/2)π-3
  • C.
    (来学网)10arctan3-3ln3
  • D.
    (来学网)10arctan(1/3)