IRIS Toolbox Reference Manual

dot

Gross rate of growth pseudofunction

Syntax

dot(Expr)
dot(Expr,K)

Description

If the input argument k is not specified, this pseudofunction expands to

((Expr)/(Expr{-1}))

If the input argument k is specified, it expands to

((Expr)/(Expr{k}))

The two derived expressions, Expr{-1} and Expr{k}, are based on Expr, and have all its time subscripts shifted by --1 or by k periods, respectively.

Example

The following two lines

dot(Z)
dot(X+Y,-2)

will expand to

((Z)/(Z{-1}))
((X+Y)/(X{-2}+Y{-2}))