HP 48gII Graphing, 50g Graphing C→R, C→PX, DATE, DARCY

Access:	!´VECTOR LCYLIN			( ´is the left-shift of the Pkey).
Input/Output:	None
See also:	RECT, SPHERE
C→PX	Command
Type:
Description:	Complex to Pixel Command: Converts the specified user-unit coordinates to pixel coordinates.
	The user-unit coordinates are derived from the (xmin, ymin) and (xmax, ymax) parameters in the
	reserved variable PPAR.
Access:	!°LPICT LC→PX			( °is the left-shift of the Nkey).
Input/Output:
			Level 1/Argument 1			Level 1/Item 1
			(x, y)		→	{ #n, #m }
See also:	PX→C
C→R	Command
Type:
Description:	Complex to Real Command: Separates the real and imaginary parts of a complex number or
	complex array. The result in item 1/level 2 represents the real part of the complex argument. The
	result in item 2/ level 1 represents the imaginary part of the complex argument.
Access:	!°TYPE LC→R				( °is the left-shift of the Nkey).
Input/Output:
			Level 1/Argument 1		Level 2/Item 1	Level 1/Item 2
			(x, y)	→	x	y
			[ C-array ]	→	[R-array ]1	[R-array ]2
	R→C, RE,
See also:		IM
DARCY	Function
Type:
Description:	Darcy Friction Factor Function: Calculates the Darcy friction factor of certain fluid flows.

DARCY calculates the Fanning friction factor and multiplies it by 4. xe/D is the relative roughness

—the ratio of the conduit roughness to its diameter. yRe is the Reynolds number. The function uses different computation routines for laminar flow (Re ≤ 2100) and turbulent flow (Re > 2100).

xe/D and yRe must be real numbers or unit objects that reduce to dimensionless numbers, and both numbers must be greater than 0.

Access:	…µDARCY
Input/Output:
		Level 2/Argument 1	Level 1/Argument 2		Level 1/Item 1
		xe / D	yRe	→	xDarcy
See also:	FANNING

DATE

Type:	Command
Description:	Date Command: Returns the system date.
Access:	…ÓTOOLS DATE	(Óis the right-shift of the 9 key).
	…&9DATE
		Full Command and Function Reference 3-49