Any function and its inverse are symmetrical about the line\(y = x\).
The sample inverse autocorrelation function (SIACF) plays much the same role in ARIMA modeling as the sample partial autocorrelation function (SPACF) but generally indicates subset and seasonal ...
You write the inverse of \(f(x)\) as \({f^{ - 1}}(x)\). This reverses the process of \(f(x)\) and takes you back to your original values.
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