CUET Mathematics 2023 22 May Shift 3 PYQs

$\int \frac{dx}{x^3\sqrt{(1 + x^4)}} =$

$\int_0^1 tan^{-1}\left(\frac{2x-1}{1+x-x^2}\right)dx$ is equal to

$\int x\sqrt{x + 2} \, dx$ is equal to :