HP 39gII, Руководство пользователя

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174 Using mathematical functions
DEG
→
RAD
Degrees to radians. Converts value from Degrees angle
format to Radians angle format.
DEG
→
RAD
( value )
Example:
DEG
→
RAD(
180
)
returns
3.14159265359
, the
value of
π
.
FLOOR
Greatest integer less than or equal to value .
FLOOR
( value )
Example:
FLOOR(-3.2)
returns
-4
FNROOT
Function root-finder (like the Solve app). 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
61.224489796
.
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