How to get this pic?

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How to plot cond1 and cond2 with the cost in one figure?

[x1,x2]=meshgrid(0:.1:10,0:.1:10);

cond1=x1-x2<=-2;

cond2=-0.3*x1-x2<=-8;

cost=0.4*x1.^2-5*x1+x2.^2-6*x2+50;

figure (1)

contour(x1,x2,cost,10,'linewidth',2)

xlabel('x_{1}');

ylabel('x_{2}');

hold on

...

KSSV
on 17 Sep 2021

[x1,x2]=meshgrid(0:.1:10,0:.1:10);

cond1=x1-x2<=-2;

cond2=-0.3*x1-x2<=-8;

cost=0.4*x1.^2-5*x1+x2.^2-6*x2+50;

figure (1)

contour(x1,x2,cost,10,'linewidth',2)

hold on

contour(x1,x2,cond1,'color','k','linewidth',2)

contour(x1,x2,cond2,'color','r','linewidth',2)

xlabel('x_{1}');

ylabel('x_{2}');

hold on

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