Index
Field of Directions on Plane

To plot a direction field specified by function of two variables F(x, y) in Cartesian
coordinates,
select Direction Field in the Choose Curve Type window,
press OK
and enter graph definition in the following format:
F(x,y)
where F(x,y) is an expression, depending on variables x and y.
Example:

x/y
defines field of directions of differential equation     y’=x/y