Example: The following program computes the above rule of thumb for the number of accurate digits:

«DUP SIZE 1 GET LOG SWAP COND LOG + 11 SWAP - »

See also: SNRM, SRAD, TRACE

CONIC

Type: Command

Description: Conic Plot Type Command: Sets the plot type to CONIC.

When the plot type is CONIC, the DRAW command plots the current equation as a second- order polynomial of two real variables. The current equation is specified in the reserved variable EQ. The plotting parameters are specified in the reserved variable PPAR, which has this form:

{(xmin, ymin) (xmax, ymax) indep res axes ptype depend } For plot type CONIC, the elements of PPAR are used as follows:

•(xmin, ymin) 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+.

•(xmax, ymax) 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 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 is X.

•res is a real number specifying the interval (in user-unit coordinates) between plotted values of the independent variable, or a binary integer specifying the interval in pixels. The default value is 0, which specifies an interval of 1 pixel.

•axes is a complex number specifying the user-unit coordinates of the intersection of the horizontal and vertical axes, or a list containing such a number 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 CONIC places the command name CONIC in PPAR.

•depend is a name specifying the dependent variable. The default value is Y.

The current equation is used to define a pair of functions of the independent variable. These functions are derived from the second-order Taylor’s approximation to the current equation. The minimum and maximum values of the independent variable (the plotting range) can be specified

in indep; otherwise, the values in (xmin, ymin) and (xmax, ymax) (the display range) are used. Lines are drawn between plotted points unless flag –31 is set.

Access: …µCONIC

Input/Output: None

See also: BAR, DIFFEQ, FUNCTION, GRIDMAP, HISTOGRAM, PARAMETRIC, PARSURFACE, PCONTOUR, POLAR, SCATTER, SLOPEFIELD, TRUTH, WIREFRAME, YSLICE

CONJ

Type:

Function

 

Description:

Conjugate Analytic Function: Conjugates a complex number or a complex array.

 

Conjugation is the negation (sign reversal) of the imaginary part of a complex number. For real

 

numbers and real arrays, the conjugate is identical to the original argument.

Access:

…ßCONJ

(ßis the right-shift of the 1key).

Flags:

Numerical Results (–3)

 

Full Command and Function Reference 3-43