Section 14.3 Partial Derivatives
Ex 79
If \(f\) and \(g\) are twice differentiable functions of a
single variable, show that the function
\[u(x, t) = f(x + at) + g(x -
at)\]
is a solution of the wave equation given in Exercise 78.
If \(f\) and \(g\) are twice differentiable functions of a
single variable, show that the function
\[u(x, t) = f(x + at) + g(x -
at)\]
is a solution of the wave equation given in Exercise 78.