CT 5 CH4 Evaluation of Assurance and Annuities

What is Commutation function" D" ?

And, please explain ow to solve the below question.

 

Kindly wait till Chapter Pension Funds... You will come to know the commutation functions

How to solve?
It's just select Mort. Rates

 

How ?? I am not able to understand the solution given.

 

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]

 

Maybe tell us what you don't understand about the solution given (in the chapter) to Question 4.8, as you don't understand the solution? This will make it easier for others to help you.