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Thread: Marginal Cost

  1. #1 Marginal Cost 
    Forum Freshman
    Join Date
    Aug 2010
    The marginal cost of manufacturing x yards of a certain fabric is

    C'(x)= 3 - 0.01x + 0.000006x^2 (in dollars per yard). Find the increase in cost if the production level is raised from 1000 yards to 4500 yards.

    I tried a couple of different combinations and didn't get any answers resembling the correct one. Can someone show the process, please? I should be able to pinpoint where I'm messing up.

    I tried the following:

    c'(4500) - c'(1000)

    c(4500) - c(4500)

    And I tried some combinations where I took the answers from the top and inserted into the c(x). I would say I messed up with a careless error, but I worked and reworked the math to be entering it wrong or messing up multiplication, etc. Any help is very much appreciated.

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  3. #2  
    JX is offline
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    May 2005
    I would think C'(4500) - C'(1000) would yield the correct answer...

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