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Math Help - Total cost, revenue, profit

  1. #1
    Junior Member
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    Red face Total cost, revenue, profit

    Hi guys,
    Can you help me with my maths homework? Just find a way... Because I TOTAL do not understand what to do At least A variant

    http://www.part.lt/perziura/9b806ea9...a94b930563.png
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  2. #2
    MHF Contributor
    skeeter's Avatar
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    (a) find \frac{dC}{dQ} and minimize.

    (b) profit = revenue - cost

    find \frac{dP}{dQ} and maximize.

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  3. #3
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    I still do not catch an idea how to calculate. Can you calculate A variant all. It will be much easer to understand.
    d(TC)/dQ=0
    Q(square )-20Q+80=0
    D=(-20) (square )-4*1*80=80
    Q1=10+2radicl5
    Q2=10-2radical5
    Last edited by Kristina; October 28th 2010 at 05:11 AM.
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