Evaluate the following integral
$$\int_0^{\frac{\pi}{2}}\frac{x^2}{1+\cos^2 x}dx$$
This function does not have an elementary anti-derivative. How can we solve this?
Evaluate the following integral
$$\int_0^{\frac{\pi}{2}}\frac{x^2}{1+\cos^2 x}dx$$
This function does not have an elementary anti-derivative. How can we solve this?