params<-0.4
pgfgeometric(.2,params)
## The function is currently defined as
pgfgeometric <- function(s,params) {
k<-s[abs(s)>1]
if (length(k)>0)
warning("At least one element of the vector s are out of interval [-1,1]")
if (length(params)>1) stop("The length of params is 1")
theta<-params[1]
if ((theta>=1)|(theta<=0))
stop ("Parameter of geometric distribution must belong to the interval (0,1)")
theta/(1-(1-theta)*s)
}
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