Question

Help

Answer 1

\[\large \int\limits_{}^{}\frac{ x }{ 1+x^4}~dx\]

Answer 2

How to do this using substitution?

Answer 3

\[\large\rm \int\limits\frac{x}{1+(x^2)^2}dx\]

\[\large\rm u=x^2\]

Answer 4

Wow, that makes it so much easier.

Answer 5

I am sooo bad at recognizing these patterns and changing the form

Answer 6

Well, to be honest, I cheated.
I looked at Wolfram and saw that the answer was arctangent.

So I knew the integral had to be something like 1/(1+u^2)

Answer 7

Haha, cheater :p

Answer 8

:3