HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 168
Real-number functions
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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 DEG→RAD 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. 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