I am having difficulties defining the function f(x,y)=1 for 4<x<6, 4<y<6 and 0 Otherwise.
Here is what I have been trying:
f[x, y] = Piecewise[{{1, {{4 < x < 6}, {4 < y < 6}}}, {0, else}}]
This does not seem to work as when I plot it by doing:
Plot3D[{f[x,y]}, {x, 0, 10}, {y, 0, 10}]
nothing comes up.
Does anyone know how this can be done?
Thank you very much!
