# Math Help - how to integrate this..

1. ## how to integrate this..

Hello,
How do we integrate
$1/1+(x^4)$
Thank you!

2. This can be done by partial fractions decompositions. Notice that:
$x^4 + 1 = x^4 + 2x^2 + 1 - 2x^2 = (x^2+1)^2 - (\sqrt{2}x)^2$
Which is a difference between two squares.

Can you do it now?

3. ## thank you...

That's cool Thank you !