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    imane16's Avatar
    imane16 Posts: 9, Reputation: 1
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    #1

    Aug 13, 2008, 07:24 AM
    Maximum and Minimum values
    Let y = -16x^2 + 160x - 256. Given that y has a maximum value, find:

    The value of x giving the maximum value of y
    AND
    This maximum value of y
    Rehaan_genius's Avatar
    Rehaan_genius Posts: 49, Reputation: 1
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    #2

    Aug 13, 2008, 07:35 AM
    differentiate the equation and put it equal to 0, means put dy/dx=0 and find the value of x
    which will come out to be 5 which is the maximum value and put value of x in the given equation to get the maximum value of y
    imane16's Avatar
    imane16 Posts: 9, Reputation: 1
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    #3

    Aug 13, 2008, 07:49 AM
    What are the basic steps to differentiate an expression?
    Rehaan_genius's Avatar
    Rehaan_genius Posts: 49, Reputation: 1
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    #4

    Aug 13, 2008, 07:57 AM
    the differentiation of x^n is written as d(x^n)/dx= na^n-1 and the differentiation of constants is zero
    kayylaa's Avatar
    kayylaa Posts: 3, Reputation: 1
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    #5

    Nov 28, 2010, 06:24 PM
    I still don't understand any of this
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #6

    Nov 29, 2010, 02:02 AM

    Then don't reply.

    THREAD CLOSED
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