59
Chapter 3: Manual Calculations
R
Stores a number in a variable.
Example
• Let A = 4, and B = 6.
Calculate A + B.
4
R
A
A
E
6
R
A
B
E
A
A
+
A
B
E
r
Recalls a variable.
Example
• Set C = 8.
8
R
A
C
E
Recall the value of C.
@
r
A
C
E
X
Enters a variable “
x
”, “
θ
”, “T”, or “
n
”. The variable is automatically
determined according to the calculator’s coordinate setup: “
x
” for
rectangular, “
θ
” for polar, “T” for parametric, “
n
” for sequential.
z
Accesses the VARS menu.
{
}
Enter braces to group numbers as a list.
b
Recalls the previous answer. Use this key to incorporate the answer
to the previous calculation into an expression.
Example
• Perform 3
×
3.
3
|
3
E
Subtract the value of the
previous answer from “10”.
1 0
-
@
b
E
Note:
b
can be considered as a variable; its value is automatically
set when
E
is pressed. If
b
is not empty, then pressing
+
,
-
,
|
, or
=
will recall “Ans” and places it at the
beginning of an expression. If “1” was the previous answer, then
pressing
+
4
E
will result in “5”.
