- #1

- 142

- 5

## Homework Statement

Please tell me how to solve the below integral

##\int \frac{(1+x^2)}{(1-x^2)\sqrt{1+x^4}}dx##

## Homework Equations

## The Attempt at a Solution

This is beyond my imagination so, believe me or not, I can't attempt anything!

Give me hint please.

I guess the denominator can be solve by using trigonometric substitution but the x is in ##x^4## form, not ##x^2##. So, it can not be solved using the trigonometric substitution.