How do I create a 2d surface plot for a function of x and y?

This is what I tried

x=linspace(0,10)

y=linspace(0,10)

[xm,ym]=meshgrid(x,y)

fxy=sin(x).*cos(y)

surf(fxy)

but it gives me

Error using surf (line 71)

Z must be a matrix, not a scalar or vector.

Error in problem3 (line 5)

surf(fxy)

Answer 1

[Kelly Kearney]

Change

fxy = sin(x).*cos(y)

to

fxy = sin(xm).*cos(ym)