Question
Differentiate (with respect to $t$ or $x$ ):$$y=\cos ^{3} t$$
Step 1
Here, our function is $\cos^3 t$, so we treat $\cos t$ as our 'x'. Applying the power rule gives us: $$\frac{d}{dt}(\cos^3 t) = 3\cos^2 t \cdot \frac{d}{dt}(\cos t)$$ Show more…
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