Calc2.28

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Find the derivative of f(x)\, with respect to x\,: f(x)=x^3\cos x\,

Use the product rule to find the derivative.

f'(x)=x^3\frac{d}{dx}(\cos x)+\frac{d}{dx}(x^3)(\cos x)\,

f'(x)=x^3(-\sin x)+3x^2\cos x\,


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