Plot function = value Matlab

Question

I have a function f(x1,x2) = x1*x2. That is easy enough to plot using ezsurf.

Can I plot f(x1,x2) = x1*x2 = 1? I want to see what specific sets of solutions look like.

Answer 1

Try using contour:

z = f(x1, x2);
contour(x1, x2, z, [1 1]);