HP 39g+ - Manual (Page 158)

11-14 Using mathematical functions
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