**Casio fx-CG50: Animation of a Graph**

**Introduction**

You can easily animate a graph with the Dynamic Graphing mode. While I'm describing this procedure for the fx-CG50, I'm pretty sure it is available for the earlier models such as fx-CG10, fx-9750GII, and fx-9860GII.

Specifically, you can dynamically change a single variable between two points with a specified step.

For example: y = A*x where A varies from 0 to 5, and its step is 1.

**General Procedure**

1. Enter Dynamic Graph mode. On the fx-CG50, press [ MENU ], [ 6 ].

2. Type and select an equation. The equation can be a function, a set of parametric equations, a polar equation, or on newer calculators, a shaded inequality.

3. Press [ F4 ] (VAR) to take you to the variable screen. Select the variable you want to animate. You can animate any variable A - Z and θ. Keep in mind that X is used for functions equations, T is used for parametric equations, and θ is for polar equations.

4. Set the Animation Speed by pressing [ F3 ] (SPEED). The speeds that can be selected are:

F1: Stop & Go (you advance the slides with the right and left arrows)

F2: Slow speed

F3: Normal speed

F4: Fast speed

5. Press [ F6 ] (DYNA) to start the animation. To stop it, press [ AC ].

**Example**

x1(t) = 1.2 * A * cos T

y1(t) = A * sin (T + 1) * cos (π/(3*T))

with π/12 ≤ T ≤ 2 π, step π/12

Eddie

All original content copyright, © 2011-2019. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.

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