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Partial differentiation question?

  1. Jul 24, 2011 #1
    The coefficient of rigidity n of a wire of lenght L and uniform diameter is given by:
    n = AL/d^4

    where A is a constant....If errors of +- 0.25% and +-1% are possible in measuring L and d respectively, find the maximum possible error in the calculated value of n...

    how do i do this.?

    I've partially differentiated it with respect to L and d.....and thats about it..
  2. jcsd
  3. Jul 24, 2011 #2
    ok...nvm...i got it....its +-4.25%...i forgot to include the units of 0.25L and 1d.....lol...
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