mathHand.com has new functions:
can solve time fractional partial differential equation.
mathHand.com solves fractional partial differential equation by clicking the dsolve and plot by clicking plot3D and test its solution by clicking the test.
mathHand.com updated, it has new GUI, you can input a function by clicking in left-hand site, so you do not need to remember function name.
please let me know what do you think.