Solution of partial differential equations (2) – the wave equation

The wave equation is given by: https://www.w3.org/1998/Math/MathML"> ∂ 2 u ∂ x 2 = 1 c 2 ∂ 2 u ∂ t 2 https://s3-euw1-ap-pe-df-pch-content-public-u.s3.eu-west-1.amazonaws.com/9780429294402/7a019bd2-8e3e-42f5-a1b0-42593cc08f27/content/eq5155.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>