Casio Differential Equation Instrukcja Użytkownika Pobierz pdf (Strona 4)

6. After checking the box, click on the first toolbar button ( ) to graph. Select

Zoom/Square to improve the shape of your circle.

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7. In what direction is the curve traced as t increases? [Hint: Click the menu and select

Graph Format. Next, check Leading Cursor.]

8. How can we reverse the direction the curve is traced in? There are multiple answers!

In 2-D, we have one parameter, t, to map two variables onto a curve. In 3-D, we have two

parameters, s and t, to map three variables onto a surface. The ClassPad makes exploring

parametric equations in 3-D fun and somewhat easy to understand!

Assume you do not know the equation of a cylinder. But, we do know x=cos(t), y=sin(t) is a

circle in 2D. With this knowledge, can you guess the parametric equation for a cylinder?

1. Continuing with the same eActivity, close the Graph window and click below the Graph

Editor strip in the eActivity window.

2. Select Insert/ Strip/ 3D Graph Editor.

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Casio Differential Equation Instrukcja Użytkownika Strona 4