
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 (ENTER) 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^fSTACK) (NXTl
is present).
UF' (or press (enter ) 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\(ENTER)
2: 2.105263157896-2
1: 2.10526315789E-2
3-4 Stack
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