HP Essential Functions of the 39g+ Graphing Calculator

FNROOT	Function root-finder (like the Solve aplet). Finds the value
	for the given variable at which expression most nearly
	evaluates to zero. Uses guess as initial estimate.
	FNROOT(expression, variable, guess)
	Example
	FNROOT(M*9.8/600-1,M,1) returns
	61.2244897959.
FRAC	Fractional part.
	FRAC(value)
	Example
	FRAC (23.2) returns .2
HMS→	Hours-minutes-seconds to decimal. Converts a number or
	expression in H.MMSSs format (time or angle that can
	include fractions of a second) to x.x format (number of
	hours or degrees with a decimal fraction).
	HMS→(H.MMSSs)
	Example
	HMS→(8.30) returns 8.5
→HMS	Decimal to hours-minutes-seconds. Converts a number or
	expression in x.x format (number of hours or degrees
	with a decimal fraction) to H.MMSSs format (time or
	angle up to fractions of a second).
	→HMS(x.x)
	Example
	→HMS(8.5) returns	8.3
INT	Integer part.
	INT(value)
	Example
	INT(23.2) returns	23
MANT	Mantissa (significant digits) of value.
	MANT(value)

Example

MANT(21.2E34) returns 2.12

11-14 Using mathematical functions