PC:Windows:Education:Mathematics Views 1228 (+0) / Freeware
ODEcalc for Windows: An Ordinary Differential Equation (ODE) Calculator! State your equation and limit or initial value conditions and it solves your problem. Plots solution y and derivative ydot versus x. A Fortran Calculus demo application.
PC:Windows:Education:Mathematics Views 658 (+0) / Freeware
Logic try. It is difficult enough. A try group of 2000 members gave on ordinary 3.04 correct answers (from 10 available). This try doesn measure intelligence quotient itself, as this quotient even is not uniformly defined.