scale.
dinvexp(x, rate = 1, scale = 1/rate, log = FALSE)
pinvexp(q, rate = 1, scale = 1/rate, lower.tail = TRUE, log.p = FALSE)
qinvexp(p, rate = 1, scale = 1/rate, lower.tail = TRUE, log.p = FALSE)
rinvexp(n, rate = 1, scale = 1/rate)
minvexp(order, rate = 1, scale = 1/rate)
levinvexp(limit, rate = 1, scale = 1/rate, order)length(n) > 1, the length is
taken to be the number required.TRUE, probabilities/densities
$p$ are returned as $log(p)$.TRUE (default), probabilities are
$P[X <= x]$,="" otherwise,="" $p[x=""> x]$.dinvexp gives the density,
pinvexp gives the distribution function,
qinvexp gives the quantile function,
rinvexp generates random deviates,
minvexp gives the $k$th raw moment, and
levinvexp calculates the $k$th limited moment.Invalid arguments will result in return value NaN, with a warning.
scale
$= s$ has density:
$$f(x) = \frac{\theta e^{-\theta/x}}{x^2}$$
for $x > 0$ and $s > 0$.The $k$th raw moment of the random variable $X$ is $E[X^k]$ and the $k$th limited moment at some limit $d$ is $E[min(X, d)^k]$.
For numerical evaluation purposes, levinvexp requires that
order < 1.
exp(dinvexp(2, 2, log = TRUE))
p <- (1:10)/10
pinvexp(qinvexp(p, 2), 2)
minvexp(0.5, 2)
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