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Casio CLASSPAD 330 3.04 User Manual

Page 264

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3-2-8

Using the Graph Window

S To use factor zoom

Example: To enlarge the graphs of the following two expressions, by a factor of 5 in both

directions, to determine whether they come into contact with each other

y

1 = (

x

+ 4)(

x

+ 1)(

x

– 3)

y

2 = 3

x

+ 22

(1) On the application menu, tap $.

(2) On the Graph Editor window, input

y

1 = (

x

+ 4)(

x

+ 1)(

x

– 3) and

y

2 = 3

x

+ 22.

• For details about how to input an expression, see “Function Storage and Graphing

Example” on page 3-1-7 and “3-3 Storing Functions”.

(3)

Tap

to display the View Window, and then configure it with the following

parameters.

xmin = –8,

xmax = 8,

xscale = 1

ymin = –30, ymax = 30, yscale = 5

• See “To configure View Window parameters” on page 3-2-1.

(4)

Tap

to graph the functions.

(5) Tap [Zoom] and then [Factor].

• This displays a dialog box for configuring

x

- and

y

-axis zoom factor settings.

S To use box zoom

Example: To use box zoom to enlarge part of the graph

y

= (

x

+ 5)(

x

+ 4)(

x

+ 3)

(1) On the application menu, tap

$.

(2) On the Graph Editor window, input

y

= (

x

+ 5)(

x

+ 4)(

x

+ 3).

• For details about how to input an expression, see “Function Storage and Graphing

Example” on page 3-1-7 and “3-3 Storing Functions”.

(3)

Tap

to graph the functions.

(4) Tap [Zoom] and then [Box], or tap 1.

(5) On the Graph window, drag the stylus to draw a selection boundary around the area

you want to enlarge.

(6) Remove the stylus from the display and the area within the selection boundary expands

to fill the entire Graph window.

Box Zoom Result