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Thread: Calculus Question - How to find the marginal revenue?

  1. December 9th 2012, 09:49 AM #1
    Arivioz
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    Calculus Question - How to find the marginal revenue?

    The marginal revenue function is the differential of the total revenue function.
    For the total revenue function
    TR = 500Q + 3Q2
    where Q is the quantity produced, find the value of the marginal revenue (MR) when
    Q equals 71.
    		Give answer to nearest integer value.

    Can someone please show me how to answer this question? Thanks very much
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  2. December 9th 2012, 09:58 AM #2
    skeeter
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    Re: Calculus Question - How to find the marginal revenue?

    you first ... what is the derivative of R = 500Q + 3Q^2 ?
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  3. December 9th 2012, 10:02 AM #3
    Arivioz
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    Re: Calculus Question - How to find the marginal revenue?

    Quote Originally Posted by skeeter View Post
    you first ... what is the derivative of R = 500Q + 3Q^2 ?
    I don't know how to do that, would you mind showing me?
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  4. December 9th 2012, 10:21 AM #4
    skeeter
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    Re: Calculus Question - How to find the marginal revenue?

    When a person posts a problem, we assume they have the basic knowledge to at least attempt to work it out. I can tell you that this is a very basic derivative. I recommend you research how ... here's a link to get you started.

    http://evlm.stuba.sk/~partner7/DBfil...rentiation.pdf
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  5. December 9th 2012, 10:46 AM #5
    Arivioz
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    Re: Calculus Question - How to find the marginal revenue?

    okay so


    \frac{dt}{dq} = 500 + 6Q
    Last edited by Arivioz; December 9th 2012 at 10:49 AM.
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  6. December 9th 2012, 10:48 AM #6
    Arivioz
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    Re: Calculus Question - How to find the marginal revenue?

    can you show me what to do next?
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  7. December 9th 2012, 11:04 AM #7
    skeeter
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    Re: Calculus Question - How to find the marginal revenue?

    Quote Originally Posted by Arivioz View Post
    {\color{red}\frac{dR}{dQ}} = 500 + 6Q
    correction ...

    ... now sub in Q = 71 to find the marginal revenue.
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  8. December 9th 2012, 11:14 AM #8
    Arivioz
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    Re: Calculus Question - How to find the marginal revenue?

    okay so the answer is 926?
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