For the first one, I'd try a -substitution as .
Hence the integral is worth . Finish it.
Edit: I also see a u-sub for the third integral : let ... can you finish it?
Hey guys, I'm new to integration and these are giving me a really rough time, even just a push in the right direction would be great. Thanks for taking a look! So far, I've only learned the basic integration techniques and u-substitution.
1)
2)
I solved 2) and got . Not sure if this is right, I did expanded completely and brought everything up top before integrating.
3)
4)
Thanks for any pointers!