`normal-pdf:density:`procedureComputes the density of the distribution at the given point

`X`. If the dimension`S`of the distribution is 1, then`X`must be a scalar, otherwise it must be an SRFI-4`f64`vector of length`S`.

`normal-pdf:density:`procedureComputes the density of the distribution at the given point

`X`. If the dimension`S`of the distribution is 1, then`X`must be a scalar, otherwise it must be an SRFI-4`f64`vector of length`S`.