Gamma 指令

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Gamma[ <Alpha>, <Beta>, x ]

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Gamma[ <Alpha>, <Beta>, x, <Boolean Cumulative> ]

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Gamma[ <Alpha>, <Beta>, <Variable Value> ]

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CAS 視窗

Gamma[ <Alpha>, <Beta>, x ]

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Gamma[ <Number α>, <Number β>, x ]

Creates probability density function (pdf) of gamma distribution with parameters α, β.

Gamma[ <Number α>, <Number β>, x, <Boolean Cumulative> ]

If Cumulative is true, creates cumulative distribution function of gamma distribution, otherwise creates pdf of gamma distribution.

Gamma[ <Number α>, <Number β>, <Variable Value v> ]

Calculates the value of cumulative distribution function of gamma distribution at v, i.e. the probability P(X≤v) where X is a random variable with gamma distribution given by parameters α, β.

備註： Returns the probability for a given x-coordinate's value (or area under the gamma distribution curve to the left of the given x-coordinate).

CAS Syntax

In CAS View only following syntax is supported:

Gamma[<Number α>, <Number β>, <Variable Value v>]

Calculates the value of cumulative distribution function of gamma distribution at v, i.e. the probability P(X≤v) where X is a random variable with gamma distribution given by parameters α, β.