Intuitively, if z is a function of y, and y is a function of x, then z is a function of x The resulting composite function is denoted g ∘ f X → Z, defined by (g ∘ f) (x) = g(f(x)) for all x in XIf we think of a simple function such as multiply by 3, we can determine a set of output values Instead of writing Function = multiply by 3 we can use algebra We call the input \ (x\)Cube root function latexf\left(x\right)=\sqrt3{x}/latex Key Concepts A relation is a set of ordered pairs A function is a specific type of relation in which each domain value, or input, leads to exactly one range value, or output Function notation is a shorthand method for relating the input to the output in the form latexy=f\left(x\right)/latex In table form, a function can be
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