how to plot ellipse in this format?

Posted by Cliff Cheung on Stack Overflow See other posts from Stack Overflow or by Cliff Cheung
Published on 2010-05-17T07:35:52Z Indexed on 2010/05/17 7:40 UTC
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Hi guys,

I would like to ask how to plot ellipse in such format?? a*x^2+b*y^2+c*x*y+d*x+e*y-1=0

I tried with ezplot and contour and it didn't seem to work. Thank you guys!

Cliff.C

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