Reusing Numbers With Last X - HP 33s User Manual

Example:
Suppose you made a mistake while calculating
There are three kinds of mistakes you could have made:
Wrong
Calculation:
Ï Ã
16 19
Ï ¸
15 19
Ï ¸
16 18

Reusing Numbers with LAST X

¹ Í
You can use
Remember to enter the constant second, just before executing the arithmetic
operation, so that the constant is the last number in the X–register, and therefore
can be saved and retrieved with
Example:
16 19 = 304
Mistake:
Wrong function
Wrong first number
Wrong second number
to reuse a number (such as a constant) in a calculation.
¹ Í
96 . 704
Calculate
52
RPN: The Automatic Memory Stack
Correction:
¹ Í Ù
¹ Í ¸
¹ Í ¸
16
¹ Í ¯
.
52 . 3947
. 3947
¸
19
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