CUET Mathematics 2026 29th May Shift 2 PYQs

$\int \frac{2\cos 2x \, dx}{(\sin x+\cos x)^2}$ is equal to:(where C is an arbitrary constant)

$\displaystyle\int_1^3 \dfrac{\sqrt{x}}{\sqrt{x}+\sqrt{4-x}}dx$ is equal to:

$\int \dfrac{\pi}{x^{n+1}-x} d x=$