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The purpose of this study is to give a Bernoulli polynomial appro ximat ion for thesolution of hyperbolic partial differential equations with three variables and constant coefficients. For this purpose, a Bernoulli matrix approach is introduced. This method is based on taking the truncated Bernoulli expansions of the functions in the partial d ifferential equations. After replacing the approximations of functions in the basic equation, we deal with a linear algebraic equation. Hence, the resultdoi:10.5923/j.ajcam.20120204.01 fatcat:inq3kwrvozf45izlfxefetp6gm