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inv inverts a lag polynomial until the indicated lag.
inv
inv(lp, ...)# S3 method for lagpol inv(lp, lag.max = 10, ...)
# S3 method for lagpol inv(lp, lag.max = 10, ...)
inv returns a numeric vector with the coefficients of the inverse lag polynomial truncated at lag.max.
an object of class lagpol.
lagpol
additional arguments.
largest order of the inverse lag polynomial.
inv(as.lagpol(c(1, 1.2, -0.8)))
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