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gunmo gu
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Plot f(x,y) = (x+y+xy+1) / xy = 0

Asked by gunmo gu
on 7 Jun 2016
Latest activity Answered by Ahmed
on 16 Sep 2018
f(x,y) = (x+y+xy+1) / xy = 0
Hi, How can I plot 2D of the function above on MUPAD or Note ? It is simple 2D x, y space but I couldn't figure it out.
Thank you.

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2 Answers

Answer by Star Strider
on 7 Jun 2016
 Accepted Answer

You can do that with the Symbolic Math Toolbox and the fcontour function, setting ‘LevelList’ to a vector of zeros:
syms x y
f(x,y) = (x+y+x*y+1) / (x*y);
figure(1)
fc = fcontour(f);
fc.LevelList = [0 0];
See the documentation on fcontour for details.

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Thank you for your help. I have another Question
1. How can I show X Y axis,....... 2. How can I add another function on Same figure ?
Use the hold function.
See the documentation on hold for details.

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Answer by Ahmed
on 16 Sep 2018

https://www.mathworks.com/matlabcentral/answers/103972-how-to-plot-f-x-y-x-2-y-function-in-matlab

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