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
3-26 Full Command and Function Reference
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag –3 clear).
See also: AXL, AXQ
AXQ
Type: Command
Description: Converts a square matrix into the associated quadratic form.
Access: Convert, !Ú
MATRIX CONVERT,
or matrices !Ø
QUADRATIC FORM
Input: Level 2/Argument 1: An n×n matrix.
Level 1/Argument 2: A vector containing n variables.
Output: Level 2/Item 1: The corresponding quadratic form.
Level 1/Item 2: The vector containing the variables.
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: Find the quadratic form, expressed in terms of x, y, and z, associated with the following matrix:
3 6 0
2 4 1
1 1 1
Command:
AXQ([[3,6,0][2,4,1][1,1,1]],[X,Y,Z])
Result:
{3*X^2+(8*Y+Z)*X+(4*Y^2+2*Z*Y+Z^2),[X,Y,Z]}
See also: AXL, AXM, GAUSS, QXA
BAR
Type: Command
Description: Bar Plot Type Command: Sets the plot type to BAR.
When the plot type is BAR, the DRAW command plots a bar chart using data from one column
of the current statistics matrix (reserved variable ΣDAT). The column to be plotted is specified by
the XCOL command, and is stored in the first parameter of the reserved variable ΣPAR. The
plotting parameters are specified in the reserved variable PPAR, which has the following form:
{ (
x
min
, y
min
) (
x
max
, y
max
)
indep res axes ptype depend
}
For plot type BAR, the elements of PPAR are used as follows:
•
(x
min
, y
min
) is a complex number specifying the lower left corner of PICT (the lower left corner
of the display range). The default value is (–6.5,–3.1) for the HP 48gII and (–6.5,–3.9) for the
HP 50g and 49g+.
•
(x
max
, y
max
) is a complex number specifying the upper right corner of PICT (the upper right
corner of the display range). The default value is (6.5,3.2) for the HP 48gII and (6.5,4.0) for the
HP 50g and 49g+.
•
indep is either a name specifying a label for the horizontal axis, or a list containing such a name
and two numbers, with the smaller of the numbers specifying the horizontal location of the first
bar. The default value of indep is X.
•
res is a real number specifying the bar width in user-unit coordinates, or a binary integer
specifying the bar width in pixels. The default value is 0, which specifies a bar width of 1 in
user-unit coordinates.
•
axes is a list containing one or more of the following, in the order listed: a complex number
specifying the user-unit coordinates of the plot origin, a list specifying the tick-mark annotation,
and two strings specifying labels for the horizontal and vertical axes. The default value is (0,0).