B.2.4 Varying Annuities – Geometric – Part 1

Question 1

what is the eqn for a Geometric annuity?`

Answer 1

(Ga) angle n i r = (1 - ((1 + r)/(1 + i))^n / (i-r)

Question 2

what is the formula for a geometric annuity due?

Answer 2

(Gä) angle n i r = ä angle n ((i - r)/(1 + r))