Evaluate (x^2 - 1) dx (x^4 + 3x^2 + 1) ^ -1 ( x + 1 x )

MATHEMATICS · Subjective · CBSE · Mathematics · Integrals · Integrals

Problem

Evaluate

\int \frac{(x^2 - 1) dx}{(x^4 + 3x^2 + 1) \tan^{-1} \left( x + \frac{1}{x} \right)}