The question asks to differentiate (2nb[itex]^{rx}[/itex]+n)[itex]^{k}[/itex](adsbygoogle = window.adsbygoogle || []).push({});

However, the problem is that it doesn't specify with respect to which variable should the derivative be taken.

When the question asks to differentiate, does it mean that we should take the derivative for each and every variable, one by one?

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# Homework Help: Derivative of a multi-variable function

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