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-   -   How do you solve this? (https://www.askmehelpdesk.com/showthread.php?t=614007)

  • Nov 21, 2011, 09:25 PM
    tomashe7
    how do you solve this?
    Maximize (A 3)(B-2) if A B=40
  • Nov 22, 2011, 02:36 AM
    Aurora2000


    Substitution:

    Now differentiate the expression, and impose it equal to 0:
    which leads to B=23. Second derivative is negative, which means B=23 is a local maximum. Substitute B=23 in the original expression.
  • Nov 22, 2011, 02:40 AM
    Aurora2000
    Oops, there is a typo with B-3 instead of B-2:



    using the same argument you have B=45/2 which maximizes the expression.


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