HP Prime Graphing Wireless Calculator Manuel d'utilisateur Page 411

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Geometric
Inverse cumulative geometric distribution function. Returns the x value that has the lower-tail probability
value k, given the probability p.
GEOMETRIC_ICDF(p, k)
Example:
GEOMETRIC_ICDF(0.3, 0.95) returns 9.
Poisson
Inverse cumulative Poisson distribution function. Returns the value x such that the probability of x or fewer
occurrences of an event, with μ expected (or mean) occurrences of the event in the interval, is p.
POISSON_ICDF( ,p)
Example:
POISSON_ICDF(4,0.238103305554) returns 3.
List
These functions work on data in a list. For more information, see the Lists chapter of the Prime Calculator
User Guide.
Matrix
These functions work on matrix data stored in matrix variables. For more information, see the Matrices
chapter of the Prime Calculator User Guide.
Special
Beta
Returns the value of the beta function (Β) for two numbers a and b
Beta(a,b)
Gamma
Returns the value of the gamma function (Γ) for a number a.
Gamma(a)
Psi
Returns the value of the nth derivative of the digamma function at x=a, where the digamma function is the
rst derivative of ln(Γ(x)).
Psi(a,n)
Zeta
Returns the value of the zeta function (Z) for a real x.
Zeta(x)
Math menu 363
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