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Home Assignment 1 / Re: Problem 5
« on: September 23, 2012, 04:07:02 AM »I will expand this question a little bit:Yes, you are allowed to use every appropriate (relevant) formula given in the class without rederiving it (unless specifically asked to derive it first). Definitely you need to ask yourself: "can I apply a formula for a general solution?", "Can I apply D'Alembert formula?"
So, can we use the formula of general solution for wave equation or we should prove/derive it?
There is a subtle difference between allowed and can: you can use any appropriate formula but it may happen that you are explicitly asked to use some specific approach in which case you are allowed to use only some specific formulae.
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P.S. This is my first post here, so I am not sure if I am asking an appropriate questionYes, it is a completely appropriate question.