Yyrng; Zeros; Zfactor; Zvol - HP 48gII Advanced User's Reference Manual

The variables y
3D plots. y
...µ
Access:
Input/Output:
See also: EYEPT, XVOL, XXRNG, YYRNG, ZVOL

YYRNG

Type: Command
Description: Y Range of an Input Plane (Domain) Command: Specifies the y range of an input plane
(domain) for GRIDMAP and PARSURFACE plots.
The variables y
values are stored in the reserved variable VPAR.
...µ
Access:
Input/Output:
See also: EYEPT, XVOL, XXRNG, YVOL, ZVOL

ZEROS

CAS: Return the zeros of a function of one variable, without giving their multiplicity.

ZFACTOR

Type: Function
Description: Gas Compressibility Z Factor Function: Calculates the gas compressibility correction factor for
non-ideal behavior of a hydrocarbon gas.
x is the reduced temperature: the ratio of the actual temperature (T) to the pseudocritical
Tr
temperature (T
3.0.
y is the reduced pressure: the ratio of the actual pressure (P) to the pseudocritical pressure (P
Pr
y must be between 0 and 30.
Pr
x and y
Tr Pr
...µ
Access:
Flags: Numerical Results (-3)
Input/Output:

ZVOL

Type: Command
3-208 Full Command and Function Reference
and y are real numbers that set the y-coordinates for the view volume used in
near far
must be less than y
near far
YVOL
Level 2/Argument 1 Level 1/Argument 2
y
near
and y are real numbers that set the y-coordinates for the input plane. These
y near y far
YYRNG
Level 2/Argument 1 Level 1/Argument 2
y
near
). (Calculate the ratio using absolute temperatures.) x
c
must be real numbers or unit objects that reduce to dimensionless numbers.
ZFACTOR
Level 2/Argument 1 Level 1/Argument 2
x
Tr
x
Tr
'symb'
'symb '
1
. These values are stored in the reserved variable VPAR.
y
far
y
far
y
Pr
'symb'
y
Pr
'symb '
2
Level 1/Item 1
Level 1/Item 1
must be between 1.05 and
Tr
Level 1/Item 1
x
Zfactor
'ZFACTOR(x ,symb)'
Tr
'ZFACTOR(symb,y )'
Pr
'ZFACTOR(symb ,symb )'
1 2
).
c