stats_dens_exponential
(PECL stats >= 1.0.0)
stats_dens_exponential — Probability density function of the exponential distribution
説明
Returns the probability density at x, where the
random variable follows the exponential distribution of which the scale is
scale.
パラメータ
x-
The value at which the probability density is calculated
scale-
The scale of the distribution
戻り値
The probability density at x or false for failure.
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