Geometrical View of Differential Equation dy/dx=f(x, y)This worksheet gives you geometrical view of differential equations dy/dx=f(x, y). Direction vectors on all lattice points in a defined range are displayed. This shows direction field of a differential equation. If you try to draw direction field by hand, it is convenient to draw direction vectors on isoclines. The isoclines are lines defined as f(x, y)=C and all vectors on the same isocline have same dirrection. This worksheet illustrates how to draw vector fields on isoclines.