PHP - Manual: stats_dens_exponential
2024-12-25
(PECL stats >= 1.0.0)
stats_dens_exponential — Probability density function of the exponential distribution
$x
, float $scale
) : float
Returns the probability density at x
, where the
random variable follows the exponential distribution of which the scale is
scale
.
x
The value at which the probability density is calculated
scale
The scale of the distribution
The probability density at x
or FALSE
for failure.
官方地址:https://www.php.net/manual/en/function.stats-dens-exponential.php