Sample Slope Field


Now I want to introduce you to a nice online tool which might help you construct some of these slope fields. (if you get tired of doing this by hand and your calculator can't plot these for you) It is called DFIELD (named for the term direction field which is another term for slope field). It is being developed by

John C. Polking and some of his colleagues at Rice University. The software is really just a set of m-files that MatLab executes. MatLab is a Matrix Laboratory software package that is very popular with many mathematicians and engineers. As a matter of fact, the image that you see on the right of this page was generated using DFIELD.

Before you actually visit the site, you should remember that there are a few syntax rules that you need to understand and follow. After all, this is a computing tool, much like a calculator, and it requires a certain syntax in order to function properly. You may want to keep this window open while you are using the tool so that you can read through the following notes as you plug along for the first time. Just minimize it and pull it up whenever you need it. The link to DFIELD is at the bottom of the page, but read (at least skim it, please) through the following before you click.

Click Here in order to use DFIELD. Note: There is some introductory stuff at the top of the page. In order to crank up the tool, you must scroll down the screen and click on the grey button labelled DFIELD 2005.10 Also BE AWARE that this link appears in a new browser window. Organization of your desktop may be required!