(Solved): 2730 - First make a substitution parts to evaluate the integral. 27. cosxdx 29. /2 ...
27−30 - First make a substitution parts to evaluate the integral. 27. ∫cosxdx 29. ∫π/2πθ3cos(θ2)dθ
3. (a) Use the reduction formula in Example 6 to show that ∫0π/2sinnxdx=nn−1∫0π/2sinn−2xdx where n⩾2 is an integer.