Always at hand, UltimaCalc is compact and can stay always on top, transparent when not active. Simplify algebra expressions, integrate, differentiate, factorise polynomials. Evaluate algebraic expressions, define your own functions and constants. 200,000,000 prime numbers. Least Squares (5 methods); Standard Deviation; Plot functions; Solve Triangles; Simultaneous Linear/Nonlinear Equations; Polynomial Roots; table of constants; much more.

Numerically solves systems of simultaneous nonlinear equations. It can fully explore defined intervals to search for multiple solutions or quickly find solutions starting with random seeds. You may predefine constants and specify the error bound for the results. Handles a wide variety of functions, including trigonometric and hyperbolic functions. Results can be saved or printed. Includes a help file with instructions, example and methodology.