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 + x^3/3 + ArcTan[Sqrt[2]*x]/Sqrt[2]


Integrate[(-x^2 + 2*x^4)/(1 + 2*x^2), x] ==
-x + x^3/3 + ArcTan[Sqrt[2]*x]/Sqrt[2]



            2      4
          -x  + 2 x
Integrate[----------, x] == 
                  2
           1 + 2 x

      3
     x    ArcTan[Sqrt[2] x]
-x + -- + -----------------
     3         Sqrt[2]

Time to compute: 0.03 second

Spread the word: