You are manufacturing a particular item. After t years, the rate at which you earn a
Chapter 8, Problem 33(choose chapter or problem)
You are manufacturing a particular item. After t years, the rate at which you earn a profit on the item is(20.1t) thousand dollars per year. (A negative profit represents a loss.) Interest is 10%, compounded continuously, (a) Write a Riemann sum approximating the present value of the total profit earned up to a time M years in the future. (b) Write an integral representing the present value in part (a). (You need not evaluate this integral.) (c) For what M is the present value of the stream of profits on this item maximized? What is the present value of the total profit earned up to that time?
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