In this document has been introduced how to solve different partial differential equations in Matlab programming language.Everbody can solve Heat Conduction Equation, Helmholtz Equation, Laplace Equation and Wave Equation for different initial and bo

This software is written in Fortran 90 and is related to forward and inverse problems for the Helmholtz equation in 2-D.-This software is written in Fortran 90 and is related to forward and inverse problems for the Helmholtz equation in 2-D.

Eigenfunctions of integrable planar billiards are studied — in particular, the number of nodal domains, ν of the eigenfunctions with Dirichlet boundary conditions are considered. The billiards for which the time-independent Schrö dinger equ