Mamedov, Khamlar2015-04-082015-04-082009Journal of Science and Technology 3 (2), 2009, 241 – 2521307-3818In this work, it is considered non-homegenous heat equation with nonlocal boundary conditions. Non-local boundary conditions are reduced to pointwise non classical boundary value problem. It is applied the metod of separation variables to this problem. It is found eigenvalues and eigenfunctions of Sturm- Liouville problem which appears in the solution, the expansion according to eigenfunctions is obtained. It is shown the existence of solution of the boundary value problem which is consider. This kind of boundary value problems appears on heat variation, diffusion and economy problems.enHeat equationnon-local boundary value problemintegral conditionFourier methodadjoint boundary value problembiorthogonal adjoint sequenceArticle