In this report, numerical solution of third order linear differential equation is presented for solving two­ point and three-point boundary, value problems. The originaluhird-order boundary value problem is ~educed to initial value prob)em.'Prhen, we use-the method of superposition and.finite difference method to obtain solution of the differential equation and nufnerical examples in .two dimensions are presented by the help of programs.

A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Mathematics