Choose a differential equation using the [v] popdown menu.

Position the cursor arrow over the graphing window to display cooridinates. Click the mousekey to display the solution with that initial condition.

The slope field can be set at bright, dim, or off, using the [Slope field] box.

Grab the [m] slider to display the corresponding isoclines. Release the slider to leave the isocline on the graphing window.

Clear solutions, isoclines, or both, using the keys at bottom.

This is an adaptation of the Isocline tool in "Interactive Differential Equations," IDE, an Addison Wesley product created by Hohn, Cantwell, West, McDill, and Strogatz.

c 2001 H. Hohn