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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) BobFedorisko 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.
2W2T
e
4
d¸
¥¸
W2T
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
2I
, select
7:Probability
, and
then select
1:!
.
5
2I
71
¸
20
2I
71
¸
30
2I
71
¸
5
2
W
¸
20
2
W
¸
30
2
W
¸
Expanding Complex Numbers
1. Compute
(3+5i)
3
to see how the
TI
-
89 / TI
-
92 Plus
handles
computations involving complex
numbers.
c
3
«
5
2)
dZ
3
¸
c
3
«
5
2)
dZ
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
2634492
d
¸
„
2
2634492
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.