1. Change the components of the vector field by typing, for example:[br][br] [math]F_1=[/math] x^2sin(y) , [math]F_2=[/math] sqrt(y^2+x)exp(x/y)[br][br]2. Change the [b]Scale[/b] or [b]Vectors density[/b] to provide a better visualisation of the vector field. [br]3.[b] Zoom In[/b] or [b]Out[/b] (or drag the plane) to change the domain.