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How to reverse this?

  1. Sep 27, 2015 #1
    From the equation below,
    how do we get the XYZ if the only numbers given are the LMN (0.5839, 0.1682, 0.2477)?
    Thank you!

    X = 1.57
    Y = 5.45
    Z = 3.70

    T = (1/X+1/Y+1/Z)*100 = 109.0699

    A = (1/ (X*T))*100 = (L) 0.5839
    B = (1/ (Y*T))*100 = (M) 0.1682
    C = (1/ (Z*T))*100 = (N) 0.2477
     
    Last edited: Sep 27, 2015
  2. jcsd
  3. Sep 27, 2015 #2

    mfb

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    Staff: Mentor

    I'm not sure if I understand your notation.

    If you know (1/ (X*T))*100 = 0.5839 and T = 109.0699 then you can get X simply by multiplying both sides with X/0.5839. The other two variables work the same way.
     
  4. Sep 27, 2015 #3
    Hi already edited my post. This clears everything? Thanks!
     
  5. Sep 27, 2015 #4

    mfb

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    What does "= (L) 0.5839" mean? Is that a multiplication of L and 0.5839? Does that mean L has this value?
     
  6. Sep 27, 2015 #5
    LMN is just like XYZ variables.
     
  7. Sep 27, 2015 #6

    mfb

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    Staff: Mentor

    That doesn't answer my question. Is it a multiplication or something else?
    Why are there brackets?

    I just don't understand the notation.
     
  8. Sep 27, 2015 #7
    I see, my bad! L doesn't represent any numbers from the equation and that's not multiplication. I just put L so that I can tell people that I need to get the XYZ from those numbers 0.5839, 0.1682, 0.2477, LMN are just labels for these numbers. No other significant role in the equation.

    Sorry for making a mess in the equation!
     
  9. Sep 27, 2015 #8

    Mark44

    Staff: Mentor

    Then you should write this as L = 0.5839, M = 0.1682, and N = 0.2477. When you write LMN or XYZ, most people would interpret these as L * M * N or X * Y * Z
     
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