If w = f x y x 2 + y2 is a differentiable function of u = x y x 2 + y2 , show that x w x
Chapter 2, Problem 15(choose chapter or problem)
If w = f x y x 2 + y2 is a differentiable function of u = x y x 2 + y2 , show that x w x + y w y = 0.
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