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Extract h

  1. Mar 2, 2012 #1
    hi
    can someone help me to extract h from the folowing equetion

    V= (∏ tnα² h³)/3 + (∏ tnα d h²)/2 + ( ∏ d² h)/4

    thx
     
  2. jcsd
  3. Mar 2, 2012 #2

    chiro

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    Hey thomasJDN and welcome to the forums.

    It would help if you said what your dummy index was for the multiplication as well as the limits.
     
  4. Mar 2, 2012 #3
    im sorry i didnt mean extract
    i mean isolate
     
  5. Mar 2, 2012 #4

    Mark44

    Staff: Mentor

    The equation is a cubic in h, so isolating h entails factoring the cubic, which is nontrivial.
     
  6. Mar 2, 2012 #5

    Deveno

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    yes, but every term contains a h, so the non-zero solutions are the roots of a quadratic, which is somewhat easier.
     
  7. Mar 2, 2012 #6

    HallsofIvy

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    Staff Emeritus
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    Not if that "V" is non-zero!
     
  8. Mar 2, 2012 #7

    Deveno

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    silly me. you're right of course.
     
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