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Real-number Functions - HP 40G User Manual

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Real-number functions

CEILING
DEG
RAD
FLOOR
FNROOT
FRAC
Using mathematical functions
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Some real-number functions can also take complex
arguments.
Smallest integer greater than or equal to value.
CEILING(value)
Examples
CEILING(3.2) returns 4
CEILING(-3.2) returns -3
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.
Greatest integer less than or equal to value.
FLOOR(value)
Example
FLOOR(-3.2) returns -4
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.
Fractional part.
FRAC(value)
Example
FRAC (23.2) returns .2
10-15

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