Graphing Calculator -> Function Grapher -> Graphing Inequality

Function Grapher has the ability of graphing inequality. Inequality must be in the form of f(x, y)<0 (Cartesian coordinate) or f(a,r)<0 (polar coordinate).

Following figure shows the effect of graphing inequality a-r<0 (polar coordinate).

Graphing Calculator -> Function Grapher -> Graphing Inequality