Plotting Inequalities in Matlab

Hey all,

I have to plot some inequalities for a controls assignment for school and I was wondering if you all could help me.

The inequalities are:

x > 0

y > 5/x

y > (x^(2)-25)/5*x

Right now my code looks like this:

figure (3); clf

[x,y] = meshgrid(-10:0.02:10, -10:0.02:10);

ineq = (x > 0) & (y > 5./x) & (y > (x.^(2)-25)./(5*x));

x(~ineq) = NaN;

y(~ineq) = NaN;

plot(x(:),y(:)); box on; grid on;

Answer 1

[KSSV]

x = -10:0.1:10 ; 
y = -10:0.1:10 ; 
[X,Y] = meshgrid(x,y);
ineq = (X > 0) & (Y > 5./X) & (Y > (X.^(2)-25)./(5*X));
h = pcolor(X,Y,double(ineq)) ;
h.EdgeColor = 'none' ;

If you want to display on the region which satisfies.

x = -10:0.1:10 ; 
y = -10:0.1:10 ; 
[X,Y] = meshgrid(x,y);
ineq = (X > 0) & (Y > 5./X) & (Y > (X.^(2)-25)./(5*X));
ineq = double(ineq) ;
ineq(ineq==0) = NaN ;
h = pcolor(X,Y,double(ineq)) ;
h.EdgeColor = 'none' ;

[John Buethe]

Thank you for your help!