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Suppose some expression $f$ can be written in terms of some variable $x$. What is a better way to express this?

We can say $f = A(x)$ where $A$ is some function of $f$; however, I'm not sure if this is an appropriate way to say this.

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1 Answer

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You can say, $f=f(x)$. You can say, $f$ depends on $x$. You can say, $f$ is a function of $x$.

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