R/ddnorm.R

In miscTools: Miscellaneous Tools and Utilities

Defines functions ddnorm

Documented in ddnorm

## derivatives of the density function of the normal distribution
## with respect to x
ddnorm <- function( x, mean = 0, sd = 1 ) {
   deriv <- - dnorm( x = x, mean = mean, sd = sd ) * ( x - mean ) / sd^2
   return( deriv )
}

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