International Call Guide Save money on international phone calls with Dial Around, VoIP, Calling Cards, PC to Phone or International Callback. http://www.call-guide.com
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Quadratic Equation Solver (and more!) 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. http://www.akiti.ca/Quad2Deg.html