The first one is unreadable...
For the second, make the substitution
For the third, you need to use integration by parts...
Determine the integrals:
curently studying this module and looking at a few examples.
if someone could explain when working these out, would help be gratefully in doing other examples: three examples thank you
∫×3 + 3 dx
3 ×3
∫cos(4x+7) dx
∫ 3xsinx dx