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Exercise 5.17 Obtain the formula (IA)X = x - dla) by writing down the present value random variables for (a) an increasing annuity-due to (x) with payments of 1 + 1 at times 1 = 0,1,2,..., and (b) a whole life insurance benefit of amount 1 at time t, t = 1,2,3..., if the death of (x) occurs between ages x + 1 - 1 and x +1. Hint: Use the result mny (la), = - d n = =1 Exercise 5.17 Obtain the formula (IA)X = x - dla) by writing down the present value random variables for (a) an increasing annuity-due to (x) with payments of 1 + 1 at times 1 = 0,1,2,..., and (b) a whole life insurance benefit of amount 1 at time t, t = 1,2,3..., if the death of (x) occurs between ages x + 1 - 1 and x +1. Hint: Use the result mny (la), = - d n = =1