business math

need max and min points for c(x)=-0.001x+2+2000/x

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  1. c ' (x) = -.001 - 2000/x^2
    = 0 for max/mins

    -.001 = 2000/x^2
    x^2 = 2000/.001 = a negative.
    that is not possible, so there are no max or min points

    Here is a picture of your problem
    http://www.wolframalpha.com/input/?i=plot+y+%3D-0.001x%2B2%2B2000%2Fx

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