Derivative notation

  • Thread starter intervoxel
  • Start date
  • #1
192
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?
 

Answers and Replies

  • #2
mathman
Science Advisor
7,877
453
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).
 
  • #3
192
1
Thank you.
 

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