# Roll; Rolld; Romupload; Root - HP 48gII Advanced User's Reference Manual

Graphing calculator.

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## ROLL

Type:
RPL command
Description: Roll Objects Command: Moves the contents of a specified level to level 1, and rolls upwards the
portion of the stack beneath the specified level.
In RPN mode, 3 ROLL is equivalent to ROT.
Access:
Input/Output:
See also:
OVER, PICK, ROLLD, ROT, SWAP

### ROLLD

Type:
RPL command
Description: Roll Down Command: Moves the contents of level 2 to a specified level, n, and rolls downward
the portion of the stack beneath the specified level.
Access:
Input/Output:
See also:
OVER, PICK, ROLL, ROT, SWAP

### ROMUPLOAD

Description: This command remains from earlier HP graphing calculators and should not be used.

### ROOT

Type:
Command
Description: Root-Finder Command: Returns a real number x
for which the specified program or algebraic object most nearly evaluates to zero or a local
extremum.
guess is an initial estimate of the solution. ROOT produces an error if it cannot find a solution,
returning the message Bad Guess(es) if one or more of the guesses lie outside the domain of the
equation, or returns the message Constant? if the equation returns the same value at every
sample point. ROOT does not return interpretive messages when a root is found.
...µ
Access:
Input/Output:
3-150 Full Command and Function Reference
L
STACK
ROLL
L
... L
L
n+1
2
1
obj
... obj
n
n
1
L
STACK
ROLLD
L
... L
L
n+1
2
1
obj
... obj
n (obj
n
2
ROOT
Level 3/Argument 1
Level 2/Argument 2
«program"
«program"
'symb'
'symb'
( °is the left-shift of the Nkey).
L
...
n
obj
...
n–1
L = Level
( °is the left-shift of the Nkey).
L
n
)
obj
1
1
L = Level
that is a value of the specified variable global
root
Level 1/Argument 3
'global'
guess
'global'
{ guesses }
'global'
guess
'global'
{ guesses }
L
L
2
1
obj
obj
1
n
L
...
L
n–1
1
obj
...
obj
n
2
Level 1/Item 1
x
root
x
root
x
root
x
root

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