Question

Given $y=f(u)$ and $u=g(x),$ find $\frac{dy}{dx}$ by using Leibniz's notation for the chain rule: $\frac{dy}{dx}=\frac{dy}{du}\frac{du}{dx}.$

$y=5u^4-1,u=3\sqrt[\phantom{2}]{x}$

Provide your answer below:

$\frac{d}{dx}=$

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