Direction Fields & Euler's Method
To see the direction field for a first order equation, enter the function below in the box labelled "f(x,y)". To use Euler's Method to approximate a solution, click on the Euler's Method tool (the button with the blue tick marks), then click on the starting point for the solution you want. You may then use the arrow tool to move the starting point for the solution. Also, you can use the move tool (the four headed arrow) to move around the xy-plane, and to zoom in and out.
Sam Wilson, Created with GeoGebra