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Nonlinear download

UltimaCalc Professional
1. UltimaCalc Professional business/finance software, $49.95

Feature packed math package. Symbolic algebra; integrate and see explanation, differentiate, factorise polynomials. Solve linear and non-linear equations. Optimise an expression. Five kinds of regression / least squares fit. Plot functions.

DRS
2. DRS home software, $108

Least Cubic Method is a new method for data regression analyse , it expanded Least Square Method.