Useful life. A computer store rents time on desktop publishing systems. The total accumulated costs C(t) and revenues R(t) (in thousands of dollars) from a particular system satisfy
where t is the time in years that the system has been available for rental. Find the useful life of the system, and approximate the total profit during the useful life to within ±0.005.
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Calculus for Business, Economics, Life Sciences, and Social Sciences (14th Edition)
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