Texas Instruments TI-89, TI-92

Chapter 1: Getting Started 11

01STARTDOC TI

89/TI

92Plus:GettingStarted (English) BobFedorisko Revised:02/23/01 10:47 AM Printed:02/23/01 2:10 PM Page11 of 12

Steps

TI.89

Keystrokes

›

TI.92 Plus

Keystrokes Display

1. Display the Y= Editor. ¥# ¥#

2. Enter the function

(abs(x2ì3)ì10)/2.

c½A

XZ2|3d|

10de2

c2½A

XZ2|3d|

10de2

3. Display the graph of the

function.

Select

6:ZoomStd

by pressing

or by

moving the cursor to

6:ZoomStd

and

pressing

„6„6

4. Turn on Trace.

The tracing cursor, and the x and y

coordinates are displayed.

……

5. Open the MATH menu and select

3:Minimum.

‡DD¸ ‡DD¸

Graphing a Function

The example in this section demonstrates some of the graphing capabilities of the

TI-89 / TI-92 Plus. It illustrates how to graph a function using the Y= Editor. You will learn

how to enter a function, produce a graph of the function, trace a curve, find a minimum

point, and transfer the minimum coordinates to the Home screen.

Explore the graphing capabilities of the TI-89 / TI-92 Plus by graphing the function

y=(|x2ì3|ì10)/2.

entry line

“pretty print”

display of the

function in the

entry line

tracing

cursor