HP 48gII Graphing, 50g Graphing manual Tabvar, →Tag, Tail, →Arry, Dtag, →List, Obj→, →Str, →Unit

Result: { X^2+1,{{1, 2, 3},{2, 5, 10}}}

TABVAR

Type:	Command
Description:	For a function of the current variable, with a rational derivative, computes the variation table, that
	is the turning points of the function and where the function is increasing or decreasing.
Access:	PGRAPH L, !ÖGRAPH L
Input:	An expression in terms of the current variable, which has a rational derivative.
Output:	Level 3/Item 1: The original rational function.
	Level 2/Item 2: A list of two lists. The first list indicates the variation of the function (where it is
	increasing or decreasing) in terms of the independent variable. The second list indicates the
	variation in terms of the dependent variable, the function value.
	Level 1/Item 3: A graphic object that shows how the variation table was computed.
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:	Tabulate the variation of the function:
	x2 – 1
Command:	TABVAR(X^2-1)
Result:	{'X^2-1' {{ '-∞' – 0 + '∞' }{ '+∞' ↓ '-1' ↑ '+∞' }} Graphic 96 × 55 }
	Viewing the graphic, one sees the original function F and its derivative, as functions of X, and the
	variation table for X and F, shown as a matrix
See also:	SIGNTAB
→TAG	Command
Type:
Description:	Stack to Tag Command: Combines objects in levels 1 and 2 to create tagged (labeled) object.
	The “tag” argument is a string of fewer than 256 characters.
Access:	„°TYPE →TAG		( °is the leftshift of the Nkey).
Input/Output:
		Level 2/Argument 1 Level 1/Argument 2			Level 1/Item 1
		obj	“tag”	→	:tag:obj
		obj	'name'	→	:name:obj
		obj	x	→	:x:obj
	→ARRY,
See also:		DTAG, →LIST, OBJ→, →STR, →UNIT
TAIL	Command
Type:
Description:	Last Listed Elements Command: Returns all but the first element of a list or string.
Access:	!°LCHARS LTAIL		( °is the leftshift of the		Nkey).
Input/Output:
		Level 1/Argument 1			Level 1/Item 1
		{ obj1 ... objn	}	→	{ obj2 ... objn }
		“string1”		→	“string2”
	"tall"
Example:		TAIL returns "all".

Full Command and Function Reference 3247