This is one of those questions I'd be afraid to ask, but here I go:(adsbygoogle = window.adsbygoogle || []).push({});

If I have a quantity [itex]\Delta y= \Delta x+ (\Delta x)^2 + (\Delta x)^3 + (\Delta x)^4+\ldots[/itex]

and I let [itex]\Delta x[/itex] tend to 0, and denote it with [itex]dx[/itex], is it correct to state that [itex]dy=dx[/itex] ?

If that is correct, then what's the reasoning behind it?

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# Question on differentials (afraid to ask)

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