Graphing Calculator 3D Spherical Equations

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4. Plot Spherical Equations

This page explains how to plot a 3D equation in Graphing Calculator 3D.

Steps:

1. Select "3D" graph option if not already selected.
2. Change the coordinates option from "Cartesian" to "Spherical" in the dropdown list.
3. Type in a cylindrical equation using variables θ, φ and r.
   • To insert θ press Ctrl+1
   • To insert φ press Ctrl+2
   • Alternatively, to insert θ and φ use the keypad by clicking on KeyPad tab button.

Examples:

Here are some explicit and implicit spherical equations you can type in the program:

• r=θ+φ
• θ=r/2
• r^2+θ^2+φ^2=sin(r+θ)
• r<1+θ

Optional Steps:

• Click on "Graph" tab then click on "Override Default Range" to limit the range of θ, φ and r values.

Video Tutorial: