Plot Inequalities

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Plotting inequalities is easy with Graphing Calculator 3D. Simply select y< for "less than" inequalities and y> for "more than" inequalities when plotting an equation in 2D:

The result of y<sin(x) is shown below. A semi-transparent glassy region fills the area under the graph.

You may also select y>, x< or x> to plot inequalities above or below the curve along x or y axis. Inequality in 2D is available for both Cartesian and polar functions as well parametric equations. Here are graphs of y>sin(x), x<sqrt(10-x^2) and y>x^2:

Plot Inequalities in 3D

Plotting function inequalities in 3D is as simple as it was in 2D with Graphing Calculator 3D. Simply select z> or z< and observe how a beautiful semi-transparent glassy region is drawn under the 3D surface of the graph. The semi-transparency allows you to see under the graph surface even when it is obscured by the inequality region.

Graphing Calculator 3D allows you to visualize 3D inequalities in Cartesian, cylindrical and spherical coordinates as well as for parametric equations. Here are graphs of z<sin(x), z<x^2 and z>θ.