Recent content by errubio

I end up with Vx=e^(-Yt) where Y=b\m But i don't know where the cosine comes from for part 1

Homework Statement all information is on picture Homework Equations The Attempt at a Solution I read the paper and understood it but when I got to the first question I was really confused. I do not even know what the problem is asking. This problem could give me an A in the class...