HP 48gII Graphing, 50g Graphing manual Colσ, Comb, Con, Symb COMBsymb ,m COMBn, symb COMBsymb ,symb

Example:	Factorize the following:
	x2 + 5x + 6
Command:	COLLECT(X^2+5*X+6)
Result:	(X+2)(X+3)
See also:	COLCT, EXPAND, FACTOR
COLΣ	Command
Type:
Description:	Column Sigma Command: Specifies the independentva riable and dependentvariable columns of
	the current statistics matrix (the reserved variable ΣDAT).
	COLΣ combines the functionality of XCOL and YCOL. The independentvariable column
	number xxcol is stored as the first parameter in the reserved variable ΣPAR (the default is 1). The
	dependentvariable column number xycol is stored as the second parameter in the reserved variable
	ΣPAR (the default is 2).
	COLΣ accepts and stores noninteger values, but subsequent commands that use these two
	parameters in ΣPAR will cause errors.
Access:	…µCOLΣ

Input/Output:

Level 2/Argument 1	Level 1/Argument 2	Level 1/Item 1
xcol	ycol	→

Example: 2 5 COLΣ sets column 2 in ΣDAT as the independentvariable column, sets column 5 as the dependentvariable column, and stores 2 and 5 as th e first and second elements in ΣPAR.

See also: BARPLOT, BESTFIT, CORR, COV, EXPFIT, HISTPLOT, LINFIT, LOGFIT, LR, PREDX, PREDY, PWRFIT, SCATRPLOT, XCOL, YCOL

COMB

Type: Function

Description: Combinations Function: Returns the number of possible combinations of n items taken m at a time. The following formula is used:

n!

C , = ------------------------------

n m m! ⋅ (n – m)!

The arguments n and m must each be less than 1012. If n<m, zero is returned.

Access:	!´L PROBABILITY COMB		( ´is the leftshift of the		Pkey).
Flags:	Numerical Results (–3)
Input/Output:
		Level 2/Argument 1 Level 1/Argument 2			Level 1/Item 1
		n	m	→	Cn;m
		n	m	→	n
		'symb '		→	'COMB(symb ,m)'
		n	m			m
			'symb '		'COMB(n, symb )'
		'symb '	'symb '	→	'COMB(symb ,symb )'
		n	m		n	m
See also:	FACT, PERM, !
CON	Command
Type:

Description: Constant Array Command: Returns a constant array, defined as an array whose elements all have the same value.

Full Command and Function Reference 341