Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$8 \cos ^ { 4 } x$$

Evaluate

$8\left(\cos(x)\right)^{4}$

Differentiate w.r.t. x

$-32\sin(x)\left(\cos(x)\right)^{3}$

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