hp40g+.book Page 14 Friday, December 9, 2005 1:03 AM

UTPT

Upper-Tail Student’s t-Probability given degrees of

 

freedom, evaluated at value. Returns the probability that

 

the Student's t- random variable is greater than value.

 

UTPT(degrees, value)

Real-number functions

 

Some real-number functions can also take complex

 

arguments.

CEILING

Smallest integer greater than or equal to value.

 

CEILING(value)

 

Examples

 

CEILING(3.2) returns 4

 

CEILING(-3.2) returns -3

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 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

13-14

 

 

Using mathematical functions