Derive an expression for the velocity field (u(x,y), v(x,y)) and show the vorticity field is the same at every point (x,y)? .
When refering to the velocity field , is it refering to the components of velocity in
the x and y directions that is ($\frac{\partial x}{\partial t},\frac{\partial y}{\partial t}$)?. Im slightly confused by the notation (u(x,y),v(x,y))?.