CHAPTER 4. PERFORMING CALCULATIONS
4.9
Absolute Values
The calculator does not have a key for the absolute value. There are two ways to use the absolute
value command.
a. Find the command
abs(
in the calculator’s catalog.
Press
and scroll to
abs(
. To chose this command, use the arrow keys to move the
little black triangle so that it points at
abs(
and then press
.
Example:
To calculate
|−
4
|
, select
abs(
from the catalog and type
.
b. Type out
abs(
by hand.
To do so, use the letter keys to spell ”ABS” and then press
. Then continue with the rest
as in part a.:
4.10
Home Screen History Area: 1/30, 2/30, 3/30, ...
Look back at the last three screen shots in this handbook. In the bottom right corner, you should
see numbers like 5/30, 6/30, and 7/30. Your calculator is set to save the last 30 commands and
results (or history pairs) that you executed, with the most recent on the bottom and the least recent
at the top of the list. The ”
x
/30” is an indication that you have
x
history pairs in the history area,
out of 30 possible. If you have 30 pairs in the history area and perform another calculation, it will
bump the least recent pair out of memory and replace it with the most recent.
You can use the up/down arrows to scroll up in the memory to see what history pairs you have
in memory and bring items from the history area down to the command line. You can also change
how many pairs can be saved in the history area. See the next chapter, under
9: Format
option in
the
F1:
menu, for more information.
Example:
Recalculate the expression from the fourth line up, find the approximate value. Use the up arrow
until the expression is highlighted, press
to bring that expression to the command line, and
then press
to obtain the approximate value.
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