Derivative of sqrt(xy)

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-EquinoX-

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Homework Statement


What is the derivative of sqrt(xy) with respect to y?


Homework Equations





The Attempt at a Solution



The sqrt(xy) is equal as (xy)^(1/2), so therefore what I have is 1/2 (xy) ^ -1/2, why is this wrong?
 

Answers and Replies

  • #2
You've forgotten to use the Chain Rule. You have to differentiate the function inside the radical.
 

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