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Draw graph of quadratic function 87x - 700 - x^2

  1. Nov 2, 2008 #1
    P = 87x - 700 -x^2

    1. Draw a graph of P against x and estimate the maximum value of P and also calculate the coordinates of the stationary point and verify if it is maximum.

    I am not very good at graph drawing or stationary points... any help people???
     
  2. jcsd
  3. Nov 2, 2008 #2

    Hootenanny

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    Re: Quadratic

    You've been told several times that you need to show work or at least a little effort when asking for homework help. We will not do your homework for you.
     
  4. Nov 2, 2008 #3
    Re: Quadratic

    I found P= 87X - 700 - X^2 after my calculations, I just need a little help on where to go from there??
     
  5. Nov 2, 2008 #4

    Hootenanny

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    Re: Quadratic

    You must have lecture notes or a textbook to refer to. How does your notes suggest that one sketch such a function?
     
  6. Nov 2, 2008 #5

    symbolipoint

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    Re: Quadratic

    You presented a function P, in general form. Check your notes and textbook to learn how to transform your function into standard form. Standard form for a quadratic function allows you to see how your function has changed from P = x^2. Standard form allows you to very easily identify the vertex of the parabola. You then can let P = 0 or
    0 = 87x - 700 -x^2 to find any "roots" or "zeros" of the function P.
     
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