If the designer wants to create a lehenga using a single hue, he would use a monochromatic harmony or scheme. This harmony involves the use of a single base hue, along with variations in tints, tones, and shades.
Evaluate:
$\displaystyle \int_{0}^{3} x \cos(\pi x) \, dx$
Find:$\displaystyle \int \dfrac{dx}{\sin x + \sin 2x}$