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I would like to know how I could approach the following problem. I am given two functions [itex]y=f(x)[/itex] and [itex]z=g(x)[/itex], and I would like to express the first function as a function of the second one: that is, [tex]y = h(z)[/tex], wherehis not necessarily a linear function ofz.

One explicit example could be: [tex]y=\frac{x}{a}[/tex] [tex]z=\frac{x}{a+b}[/tex]

where the goal is to find a functionhsuch that [tex]y=h(z)[/tex]

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# How to express a function as a function of another function?

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