D is discounting factor.
Like CT1 v^n is discounting factor for certain.
In CT5 it is V^n * nPx
How to solve..
adue 56 - ( D60/D[55]+1) * a due 60
Here D[55]+1 = D[56-1] + 1 this value can be found at go diagonally down from D[55]
Last edited by a moderator: Jun 20, 2017