This is the best Graphing Calculator for Windows Phone and it is FREE now in ALL countries!
- includes a powerful and easy to use scientific calculator
- save calculation history
- radians and degrees angle modes
- cartesian, polar and parametric functions
- polynomial & linear system solver
- support pinch to zoom and drag for scrolling the graph in real time
- unlimited amout of equations can be added and plotted simultaneously
- customizable graph colors
- function tracing in cartesian
- graph view supports both portrait and landscape device orientation
- functions: sin, cos, tan, log10, ln, sinh, cosh, tanh, asin, acos, atan, asinh, acosh, atanh, ?, 3?, rand, abs, sgn, fac, sfac, round, fpart, ceil, floor
You can download it from windowsphone.com.