A marketing survey indicates that t months after a new type of computerized air purifier is introduced

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A marketing survey indicates that t months after a new type of computerized air purifier is introduced to the market, sales will be generating profit at the rate of P'(t) thousand dollars per month, where


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a. When is the rate of profitability positive and when is it negative? When is the rate increasing and when is it decreasing?


b. At what time t = tm is monthly profit maximized? Find the net change in profit over the time period 0 ≤ t ≤ tm.


c. It costs the manufacturer $100,000 to develop the purifier product, so P(0) = −100. Use this information along with integration to find P(t).


d. Sketch the graph of P(t) for t  ≥  0. A fad is a product that gains rapid success in the market, then just as quickly fades from popularity. Based on the graph P(t), would you call the purifiers a fad? Explain.

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Calculus For Business, Economics And The Social And Life Sciences

ISBN: 9780073532387

11th Brief Edition

Authors: Laurence Hoffmann, Gerald Bradley, David Sobecki, Michael Price

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