Pls help evaluate this this integralIntegration sin3xcos5x dx

Compose trigonometric/hyperbolic capacities utilizing various points: 

=∫(sin(8x)−sin(2x))/2dx 

Apply linearity: 

=1/2∫sin(8x)dx−1/2∫sin(2x)dx 

Explaining putting 8x =u and du/dx = 8 we likewise accomplishing for 2x and comprehending them independently gives us the outcome. cos(2x)/4−cos(8x)/16+C