HP 48GII

Full Command and Function Reference 3-137
integration. If evaluating an integral expression caused the name to be evaluated, the result of
evaluation would be left on the stack for the integral, rather than the name itself. To avoid this
problem, the hp49g+/48gII automatically (and invisibly) quotes such arguments. When the
quoted argument is evaluated, the unquoted argument is returned.
If a user-defined function takes symbolic arguments, quote the arguments using QUOTE.
Access: …µ
QUOTE
Input/Output:
Level 1/Argument 1 Level 1/Item 1
obj
→
obj
See also: APPLY, | (Where)
QXA
CAS: Express a quadratic form in matrix form.
RAD
Type: Command
Description: Radians Mode Command: Sets Radians angle mode.
RAD sets flag –17 and clears flag –18, and displays the RAD annunciator.
In Radians angle mode, real-number arguments that represent angles are interpreted as radians,
and real-number results that represent angles are expressed in radians.
Access: „& H
ANGLE RAD
„°L MODES ANGLE RAD ( °is the left-shift of the Nkey).
Input/Output: None
See also: DEG, GRAD
RAND
Type: Command
Description: Random Number Command: Returns a pseudo-random number generated using a seed value,
and updates the seed value.
The hp49g+/hp48gII uses a linear congruential method and a seed value to generate a random
number x
random
in the range 0 ≤ x < 1. Each succeeding execution of RAND returns a value
computed from a seed value based upon the previous RAND value. (Use RDZ to change the
seed.)
Access: !´L
PROBABILITY RAND ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
→
x
random
See also: COMB, PERM RDZ, !
RANK
Type: Command
Description: Matrix Rank Command: Returns the rank of a rectangular matrix.
Rank is computed by calculating the singular values of the matrix and counting the number of
non-negligible values. If all computed singular values are zero, RANK returns zero. Otherwise
RANK consults flag –54 as follows:
• If flag –54 is clear (the default), RANK counts all computed singular values that are less than
or equal to 1.E–14 times the largest computed singular value.
• If flag –54 is set, RANK counts all nonzero computed singular values.