1. The problem statement, all variables and given/known data Verify that, for any continuously differentiable function g and any constant c, the function ￼u(x, t) = 1/(2c)∫(x + ct)(x - ct) g(z) dz ( the upper limit (x + ct) and lower limit (x - ct)) is a solution to the PDE utt = c2uxx. Do not use the Leibnitz Rule, but instead review the Fundamental Theorem of Calculus. 2. Relevant equations Fundamental Theorem of Calculus I & II. 3. The attempt at a solution Not a clue but tried the first and second fundamental theorem of calculus (learned in calc I or II) but did not seem to get anywhere.