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03-05-2017
Mathematics

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The function f is defined by f(x)=2x^2-4.
Find f(-x)

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altavistard altavistard

07-05-2017

First of all, since all powers of x in this function are even, the entire function is even. Thus, using -x as input doesn't change the function. Thus, f(-x)=2x^2-4.

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