integrals.wolfram.com   Use one of Mathematica's 2500+ functions FREE online

Wolfram Mathematica Online Integrator
The world's only full-power integration solver
∫

-x/(2*a) + ArcTan[a*x]/(2*a^2) + (x^2*ArcTan[a*x])/2


Integrate[x*ArcTan[a*x], x] ==
-x/(2*a) + ArcTan[a*x]/(2*a^2) + (x^2*ArcTan[a*x])/2



Integrate[x ArcTan[a x], x] == 

                     2
-x    ArcTan[a x]   x  ArcTan[a x]
--- + ----------- + --------------
2 a         2             2
         2 a

Time to compute: 0.01 second

Spread the word: