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HP -28S Manual Page 66

Advanced scientific calculator.
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Store the number 3 in the variable R3.
Step 3: Evaluate the expression.
!f'"'.
1:
{ HOME EE SP1 }
[liJ[][][liJfXffiIc::::::Jc::::::J
The menu label
IE;!::!:.::!
means uexpression equals
H
-pressing
it
evalu-
ates the expression.
n~:TF;'R-:;1
The value (10) is returned to level!, and it appears in inverse charac-
ters in the top line of the display.
Step 4: Repeat steps 2 and 3 for other values. For example, what if
R3 is 12?
Store the number 12 in the variable R3.
12
[~Ef]
Evaluate the expression for the current values of its variables.
I,r;s"
i i i
[liJ[][][liJfXffiIc::::::Jc::::::J
The new value (12) is returned to level 1, and it appears in inverse
characters in the top line of the display.
4: Repeating Calculations
65

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