Direct 4-point 1-step block method for solving Dirichlet boundary value problem

This paper presents 4-point 1-step block method (4LBVP) to solve the linear 2^nd order boundary value problem (BVP) with Dirichlet boundary condition. 4LBVP will solve the linear 2^nd order BVP with Dirichlet boundary condition directly without the need to reduce it first into the system of 1^st order equations. 4LBVP will produce several numerical solutions simultaneously in one step. The formulation of the 4LBVP will be based on the Lagrange interpolating polynomial. 4LBVP will be used together with the linear shooting technique to produce the numerical solutions. Comparison with other methods will be given to show the advantages of this method.