Description Usage Arguments Examples
Calculates the present value of an annuity.
1  | af(l = 0, n, i)
 | 
l | 
 0 for annuity due or 1 for annuity immediate.  | 
n | 
 A numeric value. The number of payments.  | 
i | 
 A numeric value. The interest rate.  | 
1 2  | 
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