Examples: `int_(-pi/2) ^(pi/2) sin^2x dx`

Explanation

`\int_{-\pi / 2}^{\pi / 2} \frac{1-\cos 2 x}{2} d x `


`=[\frac{x}{2}-\frac{\sin 2 x}{4}]_{-\pi / 2}^{\pi / 2} `



`=\frac{\pi}{2}`