The Quadratic Equation Solver posted on this page solves for both real and imaginary (if applicable) results. Also on this site: solvers for the Cubic and Quartic equations, N Equations in N Unknowns, Eigenvalues and Eigenvectors, Cubic Spline Interpolation, Numerical Integration, and Least-Squares Data-Fitting.
It supports all the functions of commerical calculator. You do not require any server, nor database. Easy to install and use. Help is right on the screen, so that you cannot miss it. It also generates pop-up independent real-looking scientific calculator. You can use this pop-up calculator very usefully. This JavaScript calculator has all the features of a real scientific calculator. Users even can enter problems as written. You can use it to solve complex mathematical and scientific problems.
Price: Free - non-commercial - Version: 2.0 - Platform(s): Mozilla 1.4 or higher, IE 5.5 or higher - Updated: 15/11/2007