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Math Help - Calculus Marginal Cost

  1. #1
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    Calculus Marginal Cost

    The cost of manufacturing x units of a certain commodity is given by

    C(x) = square root (5x +1) +4 (the 4 is out of hte square root)

    dollars, where 0 <= x <= 10.

    Find the marginal cost when the level of production is at 7 and at 16 units. Does marginal cost increase or decrease with increasing production?


    Can someone please please please help me for this. I have a calculus test tomorrow. Although it's not the best idea to cram the night before, it's the only option I have at this point. I don't really want to know the answer exactly, since I have the answers.. But i want to know the process and a step by step would be great so I could do future problems.

    Thanks alot!
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  2. #2
    MHF Contributor

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    Well, if you think you will be asked to find marginal cost on a test, you must have seen the definition of "marginal cost". What is that definition?
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