13
Chapter 2: Operating the Graphing Calculator
With the
(
and
)
keys, parentheses (round brackets)
can be added to group sections of expressions. Sections within
the parentheses will be calculated first. Parentheses can also be
used to close the passings of values in various functions, such as
“round(1.2459,2)”.
Example
Obtain the answer to “(9
+
7)
×
(5
–
3)”.
#
C
(
9
+
7
)
|
(
5
-
3
)
E
Note:
The multiplication sign “
×
”, as the one
in the above example, can be abbrevi-
ated if it proceeds a math function, a parenthesis “(”, or a variable.
Abbreviating “(1
+
2)
×
3” to “(1
+
2) 3” will result in an error.
Cursor Basics
The cursor indicates where the next entry will be placed. The cursor may be placed
automatically to different areas by various functions and tools, or can be moved
around by using the
;
'
{
}
keys. Use the cursor keys to select a
menu item, select an item in a list, and trace along a graph.
Example
Enter “
65536
4
×
8
3
” in the Calculation screen. Then press
E
to calculate.
1. Press
#
, then
C
to clear the display.
2. Enter 4 for the root’s depth, then press
@
_
.
The root figure is entered, with the cursor automatically placed
below the figure.
For detailed instructions of how to use the
@
key, refer to
“Second Function Key” and “ALPHA Key” in this chapter.
3. Enter 65536.
At this moment, the cursor is still placed under the root figure.
4. Press
'
to move the cursor out of the area, then enter
|
at the cursor.
5. Press
@
_
again. Notice that the cursor is automati-
cally placed so that you can specify the depth of this root
figure. Type 3,
}
, and 8.
Using
parentheses
