Evaluate the following integrals. Provide clean and clear handwritten solutions thank you and Godbless. Follow the numbering.

11. Inxdx (Ans: + () X 2In4 sin 2xdx 12. (Ans: - 2cosx + 4In2 + cosx| + C) Hint: Use 2sinOcos( = sin20 2 + cosx x + 27x - 27 13. dx (Ans: }x + #x' + 36x + 81!nx - 3 + C) -6x +9 14. [sin* 7x cos7xdx (Ans: ] sin' 7x + C) In' wdw 15. (Ans: ] (In' w - 4)2+ 4(1n' w -4)"? + () wvIn'w - 4