Coloring regions and plotting boundaries

Hello I am solving a question about bayesian decision in which I have to plot P(w1/x) and P(w2/x) and color the decision regions and set vertical line boundaries for each region as in the attached photo. I know how to write the equations and do the plot but I have no prior experience in coloring the regions and setting the boundaries. If you can give me any help I would be very grateful. Thank you

Answer 1

[darova]

Use can use patch() !

x = linspace(0,10);
y = sin(x);

plot(x,y)

p = patch([1 1 2 2],[-1 1 1 -1],'');
set(p,'FaceAlpha',0.2)
set(p,'EdgeColor','none')

[Hani Haidar]

The problem is that I don't know the boundaries. I want to color the region where P(w1/x) > P(w2/x) and vice versa each in a different color

[darova]

I think intersections should be found