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Math Help - Rearranging Equations

  1. #1
    Newbie
    Joined
    Dec 2008
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    3

    Rearranging Equations

    Hi,

    How would l go about re-arranging the following equation to find L?

    X = FL^3/3EI

    Thanks in advance.
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  2. #2
    Super Member Gamma's Avatar
    Joined
    Dec 2008
    From
    Iowa City, IA
    Posts
    517

    ?

    Not sure if this is really what you are asking, but I am taking each of X,F,E,L,I\in \mathbb{R} just variables in some equation. Note E,I\not = 0 or else you get division by 0.

    X = \frac{FL^3}{3EI}

    3XEI= FL^3

    \frac{3XEI}{F}= L^3

    (\frac{3XEI}{F})^{1/3}= L


    If F=0 you get X=0 and L could be anything.
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