How can I find out if a function is a solution of a wave equation such as:
(c) x² + c²t²
The Attempt at a Solution
Is it simply differentiating the funtion with respect to 'x' twice and equating this to the product of 1/c² and differentiating the function twice with respect to 't'?
I tried doing it for part (c) and I got 1=1 which means its allowed I guess. As for part (a) I got 0=0 which i suppose it isn't?