HP 50g User's Reference Manual
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Brand: HP
Category: Calculator
Type: Advanced user's reference manual
Model: HP 48gII , HP 49g+ , HP 50G
Pages: 693
3-164 Full Command and Function Reference
PARSURFACE
Type: Command
Description: PARSURFACE Plot Type Command: Sets plot type to PARSURFACE.
When plot type is set to PARSURFACE, the DRAW command plots an image graph of a 3-
vector-valued function of two variables. PARSURFACE requires values in the reserved variables
EQ, VPAR, and PPAR.
VPAR is made up of the following elements:
{ x
left
, x
right
, y
near
, y
far
, z
low
, z
high
, x
min
, x
max
, y
min
, y
max
, x
eye
, y
eye
, z
eye
, x
step
, y
step
}
For plot type PARSURFACE, the elements of VPAR are used as follows:
•
x
left
and x
right
are real numbers that specify the width of the view space.
•
y
near
and y
far
are real numbers that specify the depth of the view space.
•
z
low
and z
high
are real numbers that specify the height of the view space.
•
x
min
and x
max
are real numbers that specify the input region’s width. The default value is (–1,1).
•
y
min
and y
max
are real numbers that specify the input region’s depth. The default value is (–1,1).
•
x
eye
, y
eye
, and z
eye
are real numbers that specify the point in space from which the graph is
viewed.
•
x
step
and y
step
are real numbers that set the number of x-coordinates versus the number of y-
coordinates plotted.
The plotting parameters are specified in the reserved variable PPAR, which has this form:
{ (
x
min
, y
min
)
,
(
x
max
, y
max
)
, indep, res, axes, ptype, depend
}
For plot type PARSURFACE, the elements of PPAR are used as follows:
•
(x
min
, y
min
) is not used.
•
(x
max
, y
max
) is not used.
•
indep is a name specifying the independent variable. The default value of indep is X.
•
res is not used.
•
axes is not used.
•
ptype is a command name specifying the plot type. Executing the command PARSURFACE
places the name PARSURFACE in ptype.
•
depend is a name specifying the dependent variable. The default value is Y.
Access: …µ
PARSURFACE
Input/Output: None
See also: BAR, CONIC, DIFFEQ, FAST3D, FUNCTION, GRIDMAP, HISTOGRAM, PARAMETRIC,
PCONTOUR, POLAR, SCATTER, SLOPEFIELD, TRUTH, WIREFRAME, YSLICE
PARTFRAC
Type: Command
Description: Performs partial fraction decomposition on a partial fraction.
Access: Algebra …× or Arithmetic, !Þ
POLYNOMIAL
LL
Input: An algebraic expression.
Output: The partial fraction decomposition of the expression.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag –3 clear).
Radians mode must be set (flag –17 set).
Example: Perform a partial fraction decomposition of the following expression:
1
x
2
1–
--------------
Command:
PARTFRAC(1/(X^2-1))