1. The problem statement, all variables and given/known data Is this a traveling wave? If so, find the speed and direction. e^-(a^2y^2+b^2t^2-2abty) 2. Relevant equations Probably relevant to know the differential wave equation. 3. The attempt at a solution I have a feeling that this is a traveling wave as it is twice differentiable and appears to be a solution of the differential wave equation. I first rearrange the equation to: e^-(ay-bt)^2 So would this be a wave traveling right at speed b? I am unsure if it matters that I am keeping the sqaure in there?