If you plan to publish your problem in a journal or textbook and would mention "Fortran Calculus" in your article, we are willing to solve your problem for you. Write a simple introduction to your problem in the body of a e-mail message, give a good descriptive subject, and attach your equations (in Fortran 77 if you know it). E-mail this info to us at and we will email you the solution.

Problems may include Algebraic equations, ODE equations, Ordinary Differential equations, Implicit equations, non-linear equations, nonlinear equations and/or constrained equations. ODE problems may be Boundary Value Problems (BVP) or Initial Value Problems (IVP).

Tweak, tweak, tweak your model parameters in order to find an optimal fit; i.e. parameter estimation simplified.

Learn how simple it is to solve math problems when using Fortran Calculus; i.e. Calculus Programming! Our Remote Batch Entries allows you a way to compile and execute your FC code via e-mail (see our 'Card' price links below for more). A simple inexpensive way to learn the power of Calculus programming.

See CurvFit demo >>

CurvFit: a curve fitting program with Lorentzian, Sine, Exponential and Power series are available models to match your data.

ODEcalc: an Ordinary Differential Equation Calculator! Solves BVP & IVP.

Match-n-Freq: a Matched Filter program used to filter signals and slim pulses.

Robot4: Robotic Arm Movement; determines how to get from a point to another point.

AC Motor Design: a simulation program for A.C. motor design that was reapplied as a constrained optimization problem with 12 unknown parameters and 7 constraints.

Body Plasma Chemistry: determine the concentration of a Therapeutic treatment drug that is in the body over a period of time.

Efficient Solar Cells: Modeling a Nanostructured Solar Cell. Problem: How to develop solar cells with a new (higher) efficiency; grätzel cells.

Pulse Slimming to minimize InterSymbol Interference: via Arbitrary Equalization with Simple LC Structures to reduce errors.

Voice Coil Motor: basically an electromagnetic transducer in which a coil placed in a magnetic pole gap experiences a force proportional to the current passing through the coil.

Heat Transfer Boundary Value Problem: Solves second order Differential Equation for temperature distribution in a tapered fin.

Electrical Filter Design: find the transfer function's poles & zeros; H(s) = Y_out(s) / Y_in(s).

Digitized Signal from Magnetic Recording: Magnetic recording of transitions written onto a computer disc drive may produce an isolated pulse as shown.

PharmacoKinetics: an open-two- compartment model with first order absorption into elimination from central compartment is presented here.

Rocket Feed System: illustrates solving implicit differential equations that model a liquid propellant rocket feed system in the presence of a longitudinal vibration.