Key Features


  • Computational Capabilities
    • Systems of nonlinear ODEs and one-dimensional PDEs (by the method of lines)
    • Systems of nonlinear algebraic/ transcendental equations (by the Davidenko and steepest descent methods)
    • Systems of differential and algebraic equations (DAEs)
    • Derivatives and one-dimensional integrals
  • Spatial Discretization
    • Finite difference approximations for first-order to fourth-order derivatives
    • Second-order to tenth-order correct centered approximations
    • First-order to fourth-order correct non-centered (upwind) approximations
  • Time Integration
    • Implicit and explicit (stiff and non-stiff) integrators based on variable-step Backward Differentiation Formulas (BDFs) and Runge-Kutta methods
    • Integration step size adjusted in accordance with user-specified absolute and relative error tolerances
    • Monitor progress of solution; pause and resume integration
    • Initial condition from previous solution
    • Double precision arithmetic
  • Input Language
    • Input statements closely resemble the mathematical statement of the problem
    • Problem set up in just a few minutes, flexible syntax rules
    • Extensive functionality with few, easy to remember special operators (e.g., u_t for du/dt)
    • An assortment of intrinsic functions
    • No need to write subroutines, define arrays, or subscript variables
    • No compiler required
    • Thorough syntax checking prior to problem execution
  • Output
    • Access to all variables for tabular and graphical output
    • Flexible templates for configuring output
    • Full spreadsheet functionality for additional post-processing
    • Wide range of formatting options for tables and charts, including 3D views
    • Exporting/importing capabilities to share tables and charts with other applications
  • System Requirements
    • RAM memory requirements: 8 MB minimum
    • Hard disk space requirements: 10 MB
    • MS Windows 3.0 minimum
    • Hardware: 486 SX/33 MHz or better
  • Other
    • Multiple Document Interface (MDI) GUI standard
    • Extensive on-line Help with a tutorial, differential equations concepts, and detailed guidelines to specify parameters such as error tolerances and number of grid points

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