Given a function F = G/H, the first derivative is usually expressed as

(HG’ – H’G)/(H^2)

But this is equivalent to:

(G’ – F H’)/H

The second form seems to be easier to implement in some cases and requires less computation, but I have never seen anyone use it. Has anyone used this?

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**Related Post**: Derivative of the Quotient: Lost in Translation?

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Интересная статейка, но как по мне, можно было бы и глубже капнуть..)

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