Pmini; Polar - HP 48gII Advanced User's Reference Manual

Description: PICT Minimum Command: Specifies (x, y) as the coordinates at the lower left corner of the
display. The complex number (x, y) is stored as the first element in the reserved variable PPAR.
...µ
Access:
Input/Output:
See also: PDIM, PMAX, XRNG, YRNG

PMINI

CAS: Find the minimal polynomial of a matrix.

POLAR

Type: Command
Description: Polar Plot Type Command: Sets the plot type to POLAR.
When the plot type is POLAR, the DRAW command plots the current equation in polar
coordinates, where the independent variable is the polar angle and the dependent variable is the
radius. The current equation is specified in the reserved variable EQ.
The plotting parameters are specified in the reserved variable PPAR, which has this form:
For plot type POLAR, the elements of PPAR are used as follows:
• (x , y
min
of the display range). The default value is (–6.5,–3.1) for the hp48gII and (–6.5,–3.9) for the
hp49g+.
• (x , y
max
corner of the display range). The default value is (6.5,3.2) for the hp48gII and (6.5,4.0) for the
hp49g+.
• indep is a name specifying the independent variable, or a list containing such a name and two
numbers specifying the minimum and maximum values for the independent variable (the
plotting range). The default value of indep is X.
• res is a real number specifying the interval, in user-unit coordinates, between values of the
independent variable. The default value is 0, which specifies an interval of 2 degrees, 2 grads,
or /90 radians.
• 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).
• ptype is a command name specifying the plot type. Executing the command POLAR places
the name POLAR in ptype.
• depend is a name specifying a label for the vertical axis. The default value is Y.
The current equation is plotted as a function of the variable specified in indep. The minimum and
maximum values of the independent variable (the plotting range) can be specified in indep;
otherwise, the default minimum value is 0 and the default maximum value corresponds to one
full circle in the current angle mode (360 degrees, 400 grads, or 2 radians). Lines are drawn
between plotted points unless flag –31 is set.
If flag –28 is set, all equations are plotted simultaneously.
If EQ contains an expression or program, the expression or program is evaluated in Numerical
Results mode for each value of the independent variable to give the values of the dependent
variable. If EQ contains an equation, the plotting action depends on the form of the equation.
3-124 Full Command and Function Reference
PMIN
Level 1/Argument 1
(x,y)
{ (x , y ) (x , y
min min max
) is a complex number specifying the lower left corner of PICT (the lower left corner
min
) is a complex number specifying the upper right corner of PICT (the upper right
max
) indep res axes ptype depend }
max
Level 1/Item 1