Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Derivative notation

  1. Sep 22, 2011 #1
    What is the meaning of

    [itex]\frac{\partial F(x)}{\partial(\partial f(x)/\partial x)}[/itex]

    in which a derivative appears in place of the variable x in the denominator?

    Anyone, please?
  2. jcsd
  3. Sep 23, 2011 #2


    User Avatar
    Science Advisor

    Let u = ∂f(x)/∂x. Then the expression is ∂F(x)/∂u. In order to make sense out of it you need to know F(x) and f(x).
  4. Sep 24, 2011 #3
    Thank you.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook