Reference Guide

Full Command and Function Reference 3-167
Access: …µ PCOV
Input/Output:
Level 1/Argument 1 Level 1/Item 1
→
x
pcovariance
See also: COLΣ, CORR, COV, PREDX, PREDY, XCOL, YCOL
PDIM
Type: Command
Description: PICT Dimension Command: Replaces PICT with a blank PICT of the specified dimensions.
If the arguments are complex numbers, PDIM changes the size of PICT and makes the arguments
the new values of (x
min
, y
min
) and (x
max
, y
max
) in the reserved variable PPAR. Thus, the scale of a
subsequent plot is not changed. If the arguments are binary integers, PPAR remains unchanged,
so the scale of a subsequent plot is changed.
PICT cannot be smaller than 131 pixels wide × 80 pixels high on the HP 50g and 49g+ (64 pixels
high on the HP 48gII) nor wider than 2048 pixels (height is unlimited).
Access: !° PICT PDIM ( °is the left-shift of the Nkey).
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
(x
min
, y
min
) (x
max
, y
max
)
→
#n
width
#m
height
→
See also: PMAX, PMIN
PERINFO
Type: Command
Description: Displays the Periodic Table version and copyright information. It doesn’t affect the stack.
Access: G PERIODIC TABLE PERINFO
Input/Output: None
See also: MOLWT, PERTBL, PTPROP
PERM
Type: Function
Description: Permutations Function: Returns the number of possible permutations of n items taken m at a
time.
The formula used to calculate P
n,m
is:
P
n m ,
n
!
n m – ( ) !
--------------------=
The arguments n and m must each be less than 10
12
. If n < m, zero is returned.
Access: !´L PROBABILITY PERM ( ´ is the left-shift of the Pkey).
Flags: Numerical Results (–3)
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
n m
→
P
n,m
'symb
n
' m
→
'PERM(symb
n,m
)'
n 'symb
m
'
→
'PERM(n, symb
m
)'
'symb
n
' 'symb
m
'
→
'PERM(symb
n
,symb
m
)'
See also: COMB, FACT, !