Hi, I stamped at a series expansion. It is probably Taylor. Would you explain it? It's in the vid.(adsbygoogle = window.adsbygoogle || []).push({});

https://confluence.cornell.edu/disp...mics+-+Differential+Form+of+Mass+Conservation

I understand equation 1 in the picture but I do not understand 2.

I cannot understand how Δv=du/dx.

Thank you.

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# B Series expansion of velocities

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