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Math Help - Quadratic curves

  1. #1
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    Quadratic curves

    Hello everyone, can someone help me with this problem. Pleaseee thank you,

    given these equations ,

    Demand = x^2+62.5p+2500=0
    Supply = x^2+100x-156.25p+1562.5=0

    Find the equilibriumq price and quantity if x is in pesos and p is in thousand units.

    THANK YOU PLEASE HELP ME.
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  2. #2
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    Re: Quadratic curves

    Quote Originally Posted by Jubemaegwapa View Post
    Hello everyone, can someone help me with this problem. Pleaseee thank you,

    given these equations ,

    Demand = x^2+62.5p+2500=0
    Supply = x^2+100x-156.25p+1562.5=0

    Find the equilibriumq price and quantity if x is in pesos and p is in thousand units.

    THANK YOU PLEASE HELP ME.
    Are you sure these equations are correct? for example, it seems odd to have x stand for pesos rather than p.

    Even odder is your demand function:

    $x^2 + 62.5p + 2500 = 0 \implies x = \pm \sqrt{-62.5p - 2500}$.

    If p is units demanded, then p must be non-negative, implying that the price is not a real number!!!
    Thanks from topsquark
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