Alright. I admit I didn't post a formal argument. I realize doesn't express a limit, but like I said before, I was trying to be analytical as I knew what the limit was. I like both of your reasonings.Originally Posted by ThePerfectHacker
I like to solve problems with analytic strict methods. When people start using their reasoning it many time leads to faulty conclusions this is why Euler and Cauchy started to create a "formal calculus" now called analysis.
Graphical methods can only be used in a specific problem. There is no way and not allowed to use a graph to proof a limit or problem.