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Wave equation is a third-order linear partial differential equation.

(a) True

(b) False

The question was asked by my college director while I was bunking the class.

This is a very interesting question from Derivation and Solution of Two-dimensional Wave Equation topic in division Applications of Partial Differential Equations of Engineering Mathematics

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Best answer
Right option is (b) False

Best explanation: The wave equation is a second-order linear partial differential equation which is developed for the description of waves (water waves, sound waves, seismic waves, light waves), acoustics, electromagnetics, and fluid dynamics.

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