Evaluate the integral I=∫0π/2sin2(x)−cos2(x)sin3(x)+cos3(x)dxI = \int_{0}^{\pi/2} \frac{\sin^2(x) - \cos^2(x)}{\sin^3(x) + \cos^3(x)} dxI=∫0π/2sin3(x)+cos3(x)sin2(x)−cos2(x)dx.
0
1
1/2
2/3