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  the derivatives of the value with respect to the variables listed in
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  the derivatives of the value with respect to the variables listed in
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  \code{theta}.
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  \code{theta}.
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}
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}
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\author{Saikat DebRoy \email{saikat@stat.wisc.edu}}
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\author{Saikat DebRoy \email{saikat@stat.wisc.edu}}
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\examples{
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\examples{
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\testonly{od <- options(digits=4)}
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\testonly{od <- options(digits = 4)}
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myenv <- new.env()
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myenv <- new.env()
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assign("mean", 0., envir = myenv)
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assign("mean", 0., envir = myenv)
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assign("sd", 1., envir = myenv)
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assign("sd", 1., envir = myenv)
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assign("x", seq(-3., 3., len = 31), envir = myenv)
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assign("x", seq(-3., 3., len = 31), envir = myenv)
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numericDeriv(quote(pnorm(x, mean, sd)), c("mean", "sd"), myenv)
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numericDeriv(quote(pnorm(x, mean, sd)), c("mean", "sd"), myenv)