(PECL stats >= 1.0.0)

stats_dens_exponentialProbability density function of the exponential distribution


stats_dens_exponential ( float $x , float $scale ) : float

Returns the probability density at x, where the random variable follows the exponential distribution of which the scale is scale.

Elenco dei parametri


The value at which the probability density is calculated


The scale of the distribution

Valori restituiti

The probability density at x or FALSE for failure.

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