# MATLAB - plotting a quadratic

• May 31st 2008, 07:40 PM
Dr Zoidburg
Quick question:
How do I plot the following in MATLAB:
$3x^2 - 4xy + 3y^2 = 20$
cheers

edit:
nevermind, think I've go it now:
appears to work.
• June 15th 2008, 04:14 AM
CaptainBlack
Quote:

Originally Posted by Dr Zoidburg
Quick question:
How do I plot the following in MATLAB:
$3x^2 - 4xy + 3y^2 = 20$
cheers

edit:
nevermind, think I've go it now: