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Functions

Functions

Functions

Functions (web search)

In mathematics, a function was originally the idealization of how a varying quantity depends on another quantity. For example, the position of a planet is a function of time. Wikipedia

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F(x).g(x) 0

F(x).g(x) 0 (web search)

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F(x).g(x)<0

F(x).g(x)<0 (web search)

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Values of x for which f(x).g(x)<0

Values of x for which f(x).g(x)<0 (web search)

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Multiplying functions (video) | Functions | Khan Academy

Multiplying functions (video) | Functions | Khan Academy (video.other)

Sal solves the following problem: given that f(x)=7x-5 and g(x)=x^3+4x, find (f*g)(x). He explains that generally, (f*g)(x)=f(x)*g(x).

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