I am looking for a convenient and free online tool for plotting Direction Fields and Solution Curves of Ordinary Differential Equations. I tried the "Slope Field Plotter" on Geogebra; it worked tolerably well with direction fields, but for solution curves, some funny thing happens like this:
- Why does the solution curve appear to be very different from circles?
- Is there any alternative online free resources that will do a better job on this?
I would love to use WolframaAlpha for this, if it works. Any suggestions on this?