Multiplication is repeated addition, so is there an explicit relation between arithmetic and geometric series if the first term is a and common difference d is equal to the common ratio q. Is it even possible to have such a case. This is not a textbook question,just something i am curious about.
Instead of $ (a, d) $ I use $( P,n) $ in the same sense.
The amount of money A after n years follows Arithmetic Progression/series with rate of interest as per formula:
$ A = P( 1 + r\cdot n) $
The amount of money after n years follows Geometric Progression/series as per formula:
$ A = P( 1 + r^ n) $