52
PARTFRAC
* = function
PARTFRAC Performs partial fraction decomposition on a partial
fraction.
<!
POLYNOMIAL
‘
symb
1
’
→ ‘
symb
2
’
PATH Returns a list specifying the path to the current directory.
<N
MEMORY
DIRECTORY
→ {
HOME directory-name
n
…
directory-name
n
}
PCAR Returns the characteristic polynomial of an
n
×
n
matrix.
<%
EIGENVECTORS
[[
matrix
1
]]
→ ‘
symb
1
’
PCOEF Returns the coefficients of a monic polynomial having
specific roots.
< !
POLYNOMIAL
[
array
]
roots
→ [
array
]
coefficients
PCONTOUR Sets the plot type to PCONTOUR.
N
PCOV Returns the population covariance of the independent
and dependent data columns in the current statistics
matrix.
N
→
x
pcovariance
PDIM Replaces
PICT
with a blank
PICT
of the specified
dimensions.
<N
PICT
(
x
min
, y
min
) (
x
max
, y
max
)
→
PERM Returns the number of possible permutations of
n
items
taken
m
at a time.*
< P
PROBABILITY
n m
→
P
n,m
PEVAL Evaluates an
n
-degree polynomial at
x.
N
[
array
]
coefficients
x
→
p
(
x
)
PGDIR Purges the named directory.
<N
MEMORY
DIRECTORY
‘
global
’
→
PICK Copies the contents of a specified level to level 1.
<N
STACK
obj
n
... obj
1
n
→
obj
n
…
obj
1
obj
n
Name Description Access Inputs Outputs
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