I need to review integration and the techniques required to integrate each problem. I haven't done calculus in years so please try your best to help me remember how to do these problems. Also, if possible, could you explain why and/or when you need to use a certain technique by just looking at the problem? Thank you!

Write the answer D (ex d x 2 ) ax S * + 2 3 dx 4 ) ( sin (5x) dx Cos ( 6 x) dx S 7 ) Sec ( 2 x) tan ( 2x) dx Sec (8x) dx 9 ) Jx 4+ Xz