🚀 go-pugleaf

The other day I asked a neighboor if he could show me the notation of a
limit... He then asked me what is the limit of the sine function. I told
him -1 and 1. He told me yes, I said "are limits that easy?". He told me,
no. What if you had a function like:

sin(2x*theta)^cos(e);

He stopped there, how do I find the limit of that???? 
He told me there are people who devote their life to limits!!!!

Are these statements true?

From Robert Hoopes
polygon@hotmail.com