The program PEEI 4.0.0.0 calculates numerical solutions of systems of partial differential equations that have number of equations equal or greater of the number of unknown functions. This version 4.0.0.0 has the following improvements over the previous ones. Have been improved the GUI, the management of the execution and the execution itself. Was made available the choice between two different methods of resolution of the total system of equations, labeled normal method and other method. The normal method is essentially the same of the previous versions, but have been improved its performance and its termination criterion. The other method is based on the interval analysis and, although is generally slower, has the advantage of being able to calculate always the best solution.

• Ordinary Differential Equations 1.00
  Solves boundary-value or initial-value problems involving nonlinear or linear ordinary differential equations of any order, or systems of such. The conditions may also be linear...