Recent content by TreeGuy001

The two first parts I maneged to do, but don't really know how to do the 3rd and 4th. Could anybody help?

Homework Statement This is my problem: (5th part is not needed) The problem is I took a bit too complicated course for me and I don't know how to solve this. Specially I need help with 3rd and 4th parts. I will very much appreciate the help. Thank you in advance.