# Rrb; Rref; Rrefmod; Rrk - HP 48gII Advanced User's Reference Manual

Graphing calculator.

Description: Rotate Right Command: Rotates a binary integer one bit to the right.
The rightmost bit of #n
...ãL
Access:
Flags:
Binary Integer Wordsize (-5 through -10), Binary Integer Base (-11, -12)
Input/Output:
RL, RLB, RRB

## RRB

Type:
Command
Description: Rotate Right Byte Command: Rotates a binary integer one byte to the right.
The rightmost byte of #n
eight times.
...ãL
Access:
Flags:
Binary Integer Wordsize (-5 through -10), Binary Integer Base (-11, -12)
Input/Output:
RL, RLB, RR

### rref

CAS:
Reduce a matrix to row-reduced echelon form, and provide a list of pivot points.
RREF
CAS:
Reduce a matrix to row-reduced echelon form – the reduction is carried out completely, so a
square matrix is reduced to an identity matrix. Step-by-step mode can be used to show how the
reduction proceeds.

### RREFMOD

CAS:
Perform modular row-reduction to echelon form on a matrix, modulo the current modulus.

### RRK

Type:
Command
Description: Solve for Initial Values (Rosenbrock, Runge–Kutta) Command: Computes the solution to an
initial value problem for a differential equation with known partial derivatives.
RRK solves y ' (t) = f(t,y), where y(t
• { list } contains five items in this order:
– The independent variable (t).
– The solution variable (y).
– The right-hand side of the differential equation (or a variable where the expression is
stored).
– The partial derivative of y'(t) with respect to the solution variable (or a variable where the
expression is stored).
becomes the leftmost bit of #n
1
BIT RR
L
BASE
BIT RR
L
BASE
BIT RR
Level 1/Argument 1
#n
1
becomes the leftmost byte of #n
1
BYTE RRB
L
BASE
BYTE RRB
L
BASE
BYTE RRB
Level 1/Argument 1
#n
1
.
2
(ã is the right-shift of the 3key).
( ´ is the left-shift of the Pkey).
( Ú is the left-shift of the 6key).
(ã is the right-shift of the 3key).
( ´ is the left-shift of the Pkey).
( Ú is the left-shift of the 6key).
) = y
. The arguments and results are as follows:
0
0
Full Command and Function Reference 3-153
Level 1/Item 1
#n
2
. RRB is equivalent to doing RR
2
Level 1/Item 1
#n
2