It is shown that in the discounted-value method the depreciation coefficient equals the straight-line method coefficient 1/N when the contributions follow an Anton distribution. Formula (26) can be rewritten as
Substituting (5) into (C2) we have
Since the first term of (C3) is a geometric series, we have
After some standard algebra it readily follows from the above that
The
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The contents section of Ruuhela, Salmi, Luoma and Laakkonen (1982)
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