I have a formula in an excel spreadsheet that calculates compounding interest over a period of time in 20 different cells, reducing the amount in each increment using the following formula:
This code generates a linear decrease across the period directly from point a to point b.
What I am trying to do is have a field that can determine a curve based on how quickly payments are made up front?
i.e. Currently displays like this
And now I want a field to enter a number which determines that curve:
i.e. Entering 100 might do this (i.e. repay 100% more each increment ):
NOTE: I want the number (100) to be adjustable to change the view of the graph