Solve a system of two variable inequalities with symbolic toolbox
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LUCA D'AMBROSIO
on 1 Jul 2024 at 16:08
Commented: LUCA D'AMBROSIO
on 2 Jul 2024 at 8:22
Hello,
is it possible to symbolically solve a system of inequalities with variables x and y and plot the result?
lets say i have to solve x+y-25>0 and x*y+y+15>0, what function should i use?
i have tried fimplicit plus assumptions but it didn't work.
thank you
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Accepted Answer
John D'Errico
on 1 Jul 2024 at 17:55
fimplicit does not plot inequalities. Sorry. If you read the help, it never says anything about inequalities.
Simplest is to just use meshgrid. For example...
[X,Y] = meshgrid(linspace(-50,50,1000));
k = (X + Y - 25 > 0) & (X.*Y + Y + 15 > 0);
plot(X(k),Y(k),'.')
More Answers (1)
Torsten
on 1 Jul 2024 at 18:43
Moved: Torsten
on 1 Jul 2024 at 18:43
is it possible to symbolically solve a system of inequalities with variables x and y ?
What do you mean by "solve" ? The feasible set is given by the set of inequalities, and in most cases it is not possible to find an easier representation.
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