Texas-instruments PLUS TI-89 User Manual download pdf (Page 225)

100

101

208 Chapter 12: Additional Graphing Topics

12ADDLGR.DOC TI-89/TI-92 Plus: Additional Graphing Tools (English) Susan Gullord Revised: 02/23/01 1:03 PM Printed: 02/23/01 2:15 PM Page 208 of 20

Enter the expression

{2,4,6} sin(x)

and graph the functions.

Graphs three functions:

2 sin(x), 4 sin(x), 6 sin(x)

Enter the expression

{2,4,6} sin({1,2,3} x)

and graph the functions.

Graphs three functions:

2 sin(x), 4 sin(2x), 6 sin(3x)

Similarly, you can use the

Graph

command from the Home screen or

a program as described on page 205.

graph {2,4,6}sin(x)

graph {2,4,6}sin({1,2,3}x)

When the graph format is set for

Graph Order

SIMUL

, the functions

are graphed in groups according to the element number in the list.

For these example functions, the

89 / TI

92 Plus

graphs three groups.

2 sin(x), x+4, cos(x)

4 sin(x), 2x+4

6 sin(x), 3x+4

The functions within each group are graphed simultaneously, but the

groups are graphed sequentially.

Pressing

moves the trace cursor to the next or previous

curve in the same family before moving to the next or previous

selected function.

Graphing a Family of Curves

By entering a list in an expression, you can plot a separate

function for each value in the list. (You cannot graph a family

of curves in SEQUENCE or 3D graphing mode.)

Examples Using the

Y= Editor

Tip:

Graph math results

may vary.

Tip:

Enclose list elements in

braces

(

[

and

)

and separate them with

commas.

Note:

The commas are

shown in the entry line but

not in the function list.

Example Using the

Graph Command

Simultaneous

Graphs with Lists

Tip:

To set graph formats

from the Y= Editor, Window

Editor, or Graph screen,

press:

89:

92 Plus:

When Tracing a

Family of Curves

1 2 ... 220 221 222 223 224 225 226 227 228 229 230 ... 622 623

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Texas-instruments PLUS TI-89 User Manual Page 225

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