Question: help! Exercise 5.17 Obtain the formula (IA) x = ax - d(la)x by writing down the present value random variables for (a) an increasing annuity-due

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Exercise 5.17 Obtain the formula (IA) x = ax - d(la)x by writing down the present value random variables for (a) an increasing annuity-due to (x) with payments of t + 1 at times t = 0, 1, 2, ..., and (b) a whole life insurance benefit of amount t at time t, t = 1,2, 3..., if the death of (x) occurs between ages x + t - 1 and x + t. Hint: Use the result n an - nvn (I'a)m = d t=1

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