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If f(x) = 2x, g(x) = x^2 + 4, what is the value of (f x g) (x)?

User Lukaspp
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1 Answer

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22 votes

The product of functions f(x) and g(x) is:


(f* g)(x)=f(x)g(x)

Substitute the expressions for the functions:


(f* g)(x)=(2x)(x^2+4)

Expand the expression on the right:


(f* g)(x)=2x^3+8x

User Umezo
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