1. L

    How to integrate x*arctanx?

    Hi Can anyone please help me integrate this? Thanks :)
  2. H

    Integral of x.arctan(x) with hint with hint

    Hi, I have the problem to find: integral of - x.arctan (x) the hint / first step is pointed to by first asking to find: integral of - x^2 / ( 1 + x^2 ) I have found the answer to be: 1/2 ( x^2 +1 ) . arctan (x) - 1/2.x I cannot deduce the working to get here though. Any help much...