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March 27, 2017

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Annual sales (in millions of units) of pocket computers are expected to grow in accordance with the following function where t is measured in years, with t = 0 corresponding to 1997.
f(t) = 0.18t^2 + 0.16t + 2.64
How many pocket computers will be sold over the 2 year period between the beginning of 1997 and the end of 1998?
NOTE: I got 1.04 but it says it is wrong.

  • Math - ,

    Hmmm. we have

    ∫[0,2] 0.18t^2 + 0.16t + 2.64
    = 0.06t^3 + 0.08t^2 + 2.64t [0,2]
    = .48 + .32 + 5.28
    = 6.08

    What did you do to arrive at your answer?

    1.04 is obviously way off, since f(0) = 2.64 just to start with.

  • Math - ,

    I did my math wrong, I don't know what I was thinking. Thanks for your help.

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