UltimaCalc Professional now contains a symbolic algebra module. This major new feature allows users to manipulate algebraic expressions: multiply expressions together, simplify them, divide one polynomial by another, or factorise a polynomial. It also does calculus - differentiate an expression, or find Taylor series. It can integrate a wide range of expressions, and explain how the result was found. UltimaCalc is a collection of mathematical tools wrapped up in one program, for use by scientists, engineers and students. The main window is a calculator that accepts mathematical expressions as plain text and evaluates them to very high precision. From the main window, specialised tools can be opened. The Algebra module is one of these. Another powerful tool is the \'Regression / Least Squares\' tool which contains a variety of methods to help analyse a set of measurements, or approximate complicated functions with simpler ones. Calculate linear regression, or use an absolute deviation fit to minimise the distorting effects of outliers. Perform a multivariate linear regression when one variable is a linear function of several others. Fit polynomials and other non-linear expressions to the data. Also very popular is the Standard Deviation tool. This calculates up to 16 different statistics for a set of data, including the mean, median, standard deviation, estimated population standard deviation, skewness, kurtosis and various standard errors. This is also a handy tool for simply adding up a set of numbers. Other tools solve simultaneous equations and, a recent addition, simultaneous non-linear equations. Another tool calculates a set of parameters that minimise an expression. There is also a tool for finding the roots of polynomials. One tool plots arbitrary functions, up to eight together. Simple to use, UltimaCalc has a comprehensive help system. Hitting F1 always opens the relevant page. Calculations are generally performed to a precision of over 38 digits, but the user can limit the display to just 8, 12 or 16 digits, and view these in a variety of formats. The \'engineering\' mode understands suffixes such as k (kilo) and M (mega), and shows results using these suffixes, where possible. The results can also be viewed in hexadecimal format, or approximated as various ratios.
### Evaluation copy available on request. Screen shots available at http://www.ultimacalc.com/html/screen_shots.html and see also http://www.ultimacalc.com/assets/images/screenshot.gif Contact: Anand Shraddhan 6 Walnut Square, Brecon, Powys LD3 8BD, U.K. Tel: 01874 620130 (U.K.), or (310) 878-4874 (U.S.) queries@ultimacalc.com
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