MuPAD Pro Computing Essentials - Examples 

Example 8.3 - Vector fields

Here are examples of vector fields for the two functions f(x,y)=[x,y] and 

Part 1: function f:=[x,y]

g(x,y)=[sin(x),cos(y)]. 

export(plot, vectorfield):

f:= vectorfield(
   [x,y], x = -2..2, y = -2..2,
   Grid = [15,15],
   Color = [Flat, RGB::Brown]
):

 
plot(f)

Part b: function g=[sin(y),cos(x)] for x,y in [-5,5]