Texas Instruments PLUS TI-89 - Manual (Page 25)

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 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
Steps
³
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
ƒ and select
8:Clear Home.
2 W 2 T
e 4 d ¸
¥ ¸ W 2 T
e 4 d ¸
¥ ¸
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
2 I , select 7:Probability, and
then select 1:!.
5 2 I 7 1
¸
2 0 2 I 7 1
¸
3 0 2 I 7 1
¸
5 2 W ¸
2 0 2 W ¸
3 0 2 W ¸
Expanding Complex Numbers
1. Compute (3+5 i ) 3 to see how the
TI -89 / TI-92 Plus handles
computations involving complex
numbers.
c 3 « 5 2 )
d Z 3 ¸ c 3 « 5 2 )
d Z 3 ¸
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
2 6 3 4 4 9 2 d
¸ „ 2
2 6 3 4 4 9 2 d
¸
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 ƒ and selecting 8:Clear Home, before performing each example, to
illustrate only the results of the example’s keystrokes.