.BG
.FN Exponential
.FN dexp
.FN pexp
.FN qexp
.FN rexp
.TL
Exponential Distribution
.CS
dexp(q)
pexp(q)
qexp(p)
rexp(n)
.AG q
vector of quantiles.
Missing values (`NA's) are allowed.
.AG p
vector of probabilities.
Missing values (`NA's) are allowed.
.AG n
sample size.
If `length(n)' is larger than 1, then `length(n)' random values are returned.
.RT
density (`dexp'),
probability (`pexp'),
quantile (`qexp'), or
random sample (`rexp')
for the standard exponential distribution.
.Tr
The density function is given by
.sp
.EQ
delim $$
f ( q ) ~=~ e sup -q ~~~ q ~>~ 0.
.EN
.sp
.En
.SE
The function `rexp' causes creation of the dataset `.Random.seed' if it does
not already exist, otherwise its value is updated.
.KW distribution
.EQ
delim off
.EN
.WR
