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Casio CLASSPAD 330 3.04 User Manual

Page 502

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S To draw a parabola

Note

A

parabola is the locus of points equidistant from a point (the focus) and a line (the directrix).

A parabola drawn using the [Parabola] command is drawn in accordance with this definition.
When you draw an parabola with the [Parabola] command, you need to specify three
different points: a line to define the directrix (Point 1 and Point 2) and one point for the focus.

Point 1 ............. A
Point 2 ............. B
Point 3 .............C

(1) Tap [Draw] and then [Parabola].

• This highlights the parabola button on the toolbar.

(2) On the screen, tap the two points that you want to specify the directrix (Point 1 and

Point 2).

• This causes a line to appear between Point 1 and Point 2.

(3) Tap the point you want to specify as Point 3.

• This specifies the point you tap as Point 3 and draws a parabola in relation to it and

the directrix.

8-2-16

Drawing Figures