If I have(adsbygoogle = window.adsbygoogle || []).push({});

(A + dA)dZ

= A dZ + dAdZ

Can I drop the dAdZ?

Likewise, with

(dT + 1)dT

= (dT)^2 + dT

Can I drop the (dT)^2? Is there any basis for these actions?

Are (dU)^3 and (dU)^2 equivalent?

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# Differentials multiplied by differentials

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