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# Solving Common Mathematical Problems

- Created: Saturday, 01 January 2005

Mathematical Solutions Toolset is a collection of five software programs that rapidly solve some common mathematical problems.

The programs consist of a set of Microsoft Excel worksheets. The programs provide for entry of input data and display of output data in a user-friendly, menu-driven format, and for automatic execution once the input data has been entered. The programs perform the following calculations:

- “Definite Integral Evaluator 1.0” calculates the definite integral of a user specified function
*y = f (x)*between user-specified limits for the lower and upper bands. The program will also plot the function. - Solve for
*X*in the matrix equation*AX = B*, where A is a 2 × 2, 3 × 3, or 6 × 6 matrix of constant coefficients, X is the matrix of unknown independent values, and*B*is the matrix of dependant values. - “Cubic Equation Solver” calculates the real and imaginary roots, x, of the cubic equation
*x*.^{3}+ ax^{2}+ bx + c = 0 - Given a pair of vectors specified in terms of their Cartesian components, the Vector Calculator program calculates their scalar product, their vector product, the unit vectors, and the angle between the vectors.
- “Unit Conversions” will convert between the English and metric values of the most commonly used units for length, volume, velocity, mass, density, force, pressure, energy, power, temperature, and thermal energy.

*This program was written by Paul L. Luz of Marshall Space Flight Center. For further information, contact Sammy Nabors, MSFC Commercialization Assistance Lead, at This email address is being protected from spambots. You need JavaScript enabled to view it.. Refer to MFS-31794.*