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partial derivative f(w,z) = w/(w^2+z^2)

Mathematics
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Are you thinking of using quotient rule or product rule for this one?
how would you use this as a product rule?
\[\large f(w,z) =\frac{w}{w^2+z^2} = w\left(w^2+z^2\right)^{-1}\]

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Other answers:

Though I don't think it would be much better that way. Just thought I'de get your take on it.
i think the whole point of this problem is to remind myself of quotient rule lol
:) If \(f = \dfrac{u}{v}\), then \(f' = \dfrac{u'v - uv'}{v^2}\)
yeap so then \[1(w^2+z^2)-w(2w)/ (w^2+z^2)^2\]
?
Yes. Though it can be simplified by gathering like terms in the numerator.
yeah i know
I figured you did :) But better to mention it than not.
for fz is -2zw/(w^2+z^2)^2?
Yah looks good for fz c:
thanks

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