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    confusedkarl's Avatar
    confusedkarl Posts: 10, Reputation: 1
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    #1

    Jun 16, 2008, 10:52 AM
    stupid q, but is my transposition of formulae correct
    Is this transpostion/rearrangement to make h subject correct?

    question: I = 1
    ---- bh^3
    12

    My answer: h = (I12/b) ^ 1/3


    Please help me. Thanks
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Jun 16, 2008, 11:12 AM
    Looks right to me
    confusedkarl's Avatar
    confusedkarl Posts: 10, Reputation: 1
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    #3

    Jun 16, 2008, 11:20 AM
    thank you. How about this.

    (R+wL)(R-wL)

    = R^2 -wL
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #4

    Jun 16, 2008, 12:35 PM
    That is the difference of two squares.

    Should be
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