Is $f (x) = 2 x^{2} + 4$ $f(x)=2x^2+4$ a function?

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Answer 1 · 2015-05-24T17:06:41

Yes.

A function is any expression where the value of one thing depends in a predictable way ofn the values of one or more other things.

Is f(x)=2x^2+4f(x)=2x2+4f(x)=2x^2+4 a function?