I've just solved all of these oddly enough. The moment I hit post I had a brainwave and got it. Thanks very much for any help that might have arrived though :).
Hello!
I'm having some trouble with finding the fundamental period of the slightly more complex trig functions. I think it's pretty simple stuff but I can't seem to crack it and I really need to get this bit sorted before I can move on with Fourier Expansions.
I can do the more simple...