df - Direction Fields-dfield6 • The routine dfield6 is...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Direction Fields -dfield6 • The routine dfield6 is already loaded on all PUCC machines as standard software. To access it from any PUCC machine: Start→All Programs→Standard Software→Computational Packages→MATLAB6.1→MATLAB6.1 If you are using your own copy of Matlab you may need to download dfield6. Here is a link : http://math.rice.edu/∼dfield/ (Note: dfield and dfield5 are older versions of dfield6.) • To access dfield6, at a Matlab prompt type: dfield6 • A popup window will appear: • Correctly enter your differential equation and enter the range of values of the independent and dependent variables. Hit Proceed and a graphics window will appear with the direction field of your differential equation. Click the mouse at any point and the corresponding solution curve through that point will be plotted. • There are several options available in the graphics display window : printing, keyboard input of initial conditions, inserting text, erasing solutions, zoom, etc. • You may have up to two parameters to quickly vary your differential equation (rather than retyping the whole differential equation with a different constant). For example, if you wanted to see the slope fields for y = At + By 2 for the values A = 0, 1, 2 and B = −0.1, 0.0, 0.1, you only need to type in one equation and simply vary the parameters A and B in the indicated boxes. ...
View Full Document

This note was uploaded on 01/26/2012 for the course MA 261 taught by Professor Stefanov during the Spring '08 term at Purdue.

Ask a homework question - tutors are online