f<-function(x) 1/dnorm(qnorm(x))
for x in (0,1)

-tgs

On Thu, May 6, 2010 at 4:40 PM, Andrew Redd <aredd@stat.tamu.edu> wrote:

> Is there a function to compute the derivative of the probit (qnorm)
> function
> in R, or in any of the packages?
>
> Thanks,
> -Andrew
>
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>
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