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Iff(x)=f(2x) for all x , then what line is necessarily an axis of symmetry of the graph of y=f(x) ? (Give the simplest equation of this line.)

 Aug 21, 2021
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The axis of symmetry is x = 2.  (The function f(x) = (x - 2)^2) is an example of this.)

 Aug 21, 2021

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