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Popular >

derivative of f(x)=x^3(x^2-4)

Solution

derivative of

f (x) = x^{3} (x^{2} - 4)

Solution

5 x^{4} - 12 x^{2}

Solution steps

\frac{d}{d x} (x^{3} (x^{2} - 4))

Apply the Product Rule:

(f \cdot g)^{'} = f^{'} \cdot g + f \cdot g^{'}

f = x^{3}, g = x^{2} - 4

= \frac{d}{d x} (x^{3}) (x^{2} - 4) + \frac{d}{d x} (x^{2} - 4) x^{3}

\frac{d}{d x} (x^{3}) = 3 x^{2}

\frac{d}{d x} (x^{2} - 4) = 2 x

= 3 x^{2} (x^{2} - 4) + 2 x x^{3}

Simplify

3 x^{2} (x^{2} - 4) + 2 x x^{3} : 5 x^{4} - 12 x^{2}

= 5 x^{4} - 12 x^{2}

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Frequently Asked Questions (FAQ)

What is the derivative of f(x)=x^3(x^2-4) ?
The derivative of f(x)=x^3(x^2-4) is 5x^4-12x^2
What is the first derivative of f(x)=x^3(x^2-4) ?
The first derivative of f(x)=x^3(x^2-4) is 5x^4-12x^2