CHAPTER 2. THE MOST BASIC BASICS
2.4
The Home Screen
The Home Screen that is highlighted in the picture in section 2.3 is where you will do all of the
calculations that you normally think of doing on a calculator, such as adding, subtracting, etc. To
get to the Home screen either:
a. press
while ”Home” is highlighted in the App Screen, or
b. press the
, since ”CALC HOME” is in green above
.
The Home Screen looks like this:
2.5
Pretty Print
One of the nicest things about the TI-89 calculator is the fact that it uses Pretty Print. Pretty print
is the option to display symbolic mathematics in the format that you would normally use when
writing mathematics. On most other calculators,
x
4
−
7
x
2
+ 1
would look like ”
x
∧
4
−
7
x
∧
2 + 1
.”
On the TI-89 Titanium,
x
4
−
7
x
2
+ 1
will look like ”
x
4
−
7
x
2
+ 1
.”
2.6
The Catalog
The calculator has a limited amount of space on the keypad and cannot have a button for every
operation or command that it can carry out. All of the preprogrammed commands are stored in
the calculators catalog. Find the word ”CATALOG” above the
button in blue. To access the
catalog, press
. This will allow you to see an alphabetical list of all the commands the
calculator has. To make use of any command, you can scroll up or down with the up/down arrow
keys to move the triangle next to the command that you want to use. Once the triangle is pointing
at the command, press
and the command will be brought to the application you were using.
You can also jump to any letter by pressing the key that corresponds to the appropriate letter.
Example:
You want to get to the
rand(
command in the catalog, but you’re currently at
abs(
. Press
and
you will jump to the beginning of the Rs in the catalog. Then use the up/down arrows to scroll
down to
rand(
.
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