invexp | R Documentation |
Density, distribution function, quantile function and random generation for the inverse exponential distribution.
dinvexp(x, rate = 1, log = FALSE) pinvexp(q, rate = 1, lower.tail = TRUE, log.p = FALSE) qinvexp(p, rate = 1, lower.tail = TRUE, log.p = FALSE) rinvexp(n, rate = 1)
x, q |
vector of quantiles. |
rate |
degrees of freedom (non-negative, but can be non-integer). |
log, log.p |
logical; if TRUE, probabilities p are given as log(p). |
lower.tail |
logical; if |
p |
vector of probabilities. |
n |
number of observations. If length(n) > 1, the length is taken to be the number required. |
The functions (d/p/q/r)invexp()
simply wrap those of the standard
(d/p/q/r)exp()
R implementation, so look at, say, stats::dexp()
for
details.
stats::dexp()
; these functions just wrap the (d/p/q/r)exp()
functions.
s <- seq(0, 10, .01) plot(s, dinvexp(s, 2), type = 'l') f <- function(x) dinvexp(x, 2) q <- 3 integrate(f, 0, q) (p <- pinvexp(q, 2)) qinvexp(p, 2) # = q mean(rinvexp(1e5, 2) <= q) pinvgamma(q, 1, 2)
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