Texas Instruments TI-89, TI-92

8 Chapter 1: Getting Started

01START.DOC TI-89/TI-92Plus:Getting Started (English) Bob Fedorisko Revised: 02/23/01 10:47 AM Printed: 02/23/01 2:10 PM Page 8 of 12

01STARTDOC TI

89/TI

92Plus:GettingStarted (English) BobFedorisko Revised:02/23/01 10:47 AM Printed:02/23/01 2:10 PM Page8 of 12

Steps

TI.89

Keystrokes

›

TI.92 Plus

Keystrokes Display

Showing Computations

1. Compute

sin(p/4) and display the

result in symbolic and numeric

format.

To clear the history area of previous

calculations, press

and select

8:Clear Home.

2W2T

e4d¸

¥¸

W2T

e4d¸

¥¸

Finding the Factorial of

Numbers

1. Compute the factorial of several

numbers to see how the

TI-89 / TI-92 Plus handles very

large integers.

To get the factorial operator (!), press

, select

7:Probability

, and

then select

1:!

52I71

202I71

302I71

52W¸

202W¸

302W¸

Expanding Complex Numbers

1. Compute

(3+5i)3 to see how the

TI-89 / TI-92 Plus handles

computations involving complex

numbers.

c3«52)

dZ3¸

c3«52)

dZ3¸

Finding Prime Factors

1. Compute the factors of the

rational number 2634492.

You can enter “factor” on the entry

line by typing

FACTOR

on the

keyboard, or by pressing

„

and

selecting

2:factor(

2. (Optional) Enter other numbers

on your own.

„2

2634492d

„2

2634492d

Performing Computations

This section provides several examples for you to perform that demonstrate some of the

computational features of the TI-89 / TI-92 Plus. The history area in each screen was

cleared by pressing ƒand selecting 8:Clear Home, before performing each example, to

illustrate only the results of the example’s keystrokes.