HP 33S - Reusing Numbers with LAST X

RPN: The Automatic Memory Stack
2–9
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
Wrong
Calculation:
Mistake: Correction:
16
Ï
19
Ã
Wrong function
¹ Í Ù
¹
Í ¸
15
Ï
19
¸
Wrong first number 16
¹ Í ¸
16
Ï
18
¸
Wrong second number
¹ Í ¯
19
¸
Reusing Numbers with LAST X
You can use
¹ Í
to reuse a number (such as a constant) in a calculation.
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
¹ Í
.
Example:
Calculate
3947.52
3947.52704.96 +
T
t t t
Z
z z t
96.704
Y
96.704 96.704 z
X
96.704
52.3947
52.3 947
149.0987
LAST
X
l l
52.3947
T
t t
Z
z t
Y
149.0987 z
X
52.3947
2.8457
LAST
X
52.3947
52.3947