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Homework Help: Find y'' by implicit differentiation

  1. Apr 24, 2005 #1
    Find y'' by implicit differentiation
    x^4+y^4=1
    i found that y'=-x^3/y^3
    y''=[(y^3)(-3x^2)-(-x^3)(3y^2)(y')]/(y^3)^2
    y''=[-3x^2(y^3)-(-x^3)(3y^2)(-x^3/y^3)]/y^6
    then i am stuck...please help....thanks
     
  2. jcsd
  3. Apr 24, 2005 #2
    You really hsould learn latex.

    Anyway, you already have the second derivative.. simplifying isnt important.
     
  4. Apr 24, 2005 #3
    can anybody teach me latex then?
     
  5. Apr 24, 2005 #4
    Theres a readme on it in one of the forums, i think its general physics.
     
  6. Apr 24, 2005 #5
    Just read over quotations from those that use it.
     
  7. Apr 25, 2005 #6
    I don't think you need to simplify anything...
     
  8. Apr 25, 2005 #7

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    It looks horrible with those minus signs.U could get rid of them.

    Daniel.
     
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