This page plots a system of differential equations of the form dy/dx = f(x,y).

For a much more sophisticated direction field plotter, see the MATLAB plotter written by John C. Polking of Rice University.

dy/dt= The direction field solver knows about trigonometric, logarithmic and exponential functions, but multiplication and evaluation must be entered explicitly (2*x and sin(x), not 2x and sin x).

The Display:
Minimum t:     Minimum y:     Arrow length: Variable length arrows
Maximum t: Maximum y: Number of arrows: