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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
Recalls a variable.
r
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.
Accesses the VARS menu.
z
Enter braces to group numbers as a list.
{ }
Recalls the previous answer. Use this key to incorporate the answer
b
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".
Chapter 3: Manual Calculations
59
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