I was copying notes in class down, now that class just ended, I was reading over the notes, and I saw this line that went from...(adsbygoogle = window.adsbygoogle || []).push({});

THIS:

[tex]\frac{x-y}{2x} = \frac{dy}{dx}[/tex]

To THIS:

[tex]\frac{1}{2}(1-\frac{y}{x}) = \frac{dy}{dx}[/tex]

But I'm wondering... wouldn't It be this?

[tex]\frac{1}{2}(x-\frac{y}{x}) = \frac{dy}{dx}[/tex]

if not.. how come?

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# A strange simplification?

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