To swap the objects in levels 1 and 2, To duplicate the object in ievei 1, Objects in levels 1 and 2 – HP 48g Graphing Calculator User Manual
Page 40: Manipulating the stack
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3
Manipulating the Stack
The HP 48 enables you to reorder, duplicate, and delete specific
objects on the stack.
To swap
the
objects in levels 1 and 2:
■ Press f4^(SWAP I (or (Q when no command line is present).
The SWAP command is useful with commands where the order is
important, such as —, /, and
Example:
Use f^fSWAP) to help calculate
Step 1:
First, calculate ^134^8,
13
( E N T E R )
8
1:
4.58£5?5694%|
Step 2:
Enter 9 and swap levels 1 and 2.
9 fi^iSWAP)
1:
4.58257569496
Step 3:
Divide the two values.
0
1:
1.96396101212
To duplicate the object in
ievei 1:
■ Press
f ^ f S T A C K ) ( N X T l
is present).
UF' (or press
(
e n t e r
) if no command line
The DUP command duplicates the contents of level 1 and bumps the
rest of the stack up one level.
Example:
Calculate + (pfg-)"*-
Step 1:
First, calculate the inverse of 47.5 and duplicate the value.
47.5 {ijx\
( E N T E R )
2:
2.105263157896-2
1:
2.10526315789E-2
3-4 Stack