1 fxe dx u x dv e x dx 2 f x In xdx u ln x dv x dx 3 fx cos 4x dx u x dv cos 4x dx 4 f sin x dx u sin x du dx 5 42 Evaluate the integral 5 Ste dt 6 Sye dy 11 f x 2x cos x dx 13 f cos x dx 15 ft In t dt 17 f t csc t dt 19 f In x dx 21 fear fe x cos x dx