Question

How do you find g[f(x)] if `g(x) = x^2` and `f(x) = x + 3`?

Answer 1

`(g@f)(x)=g[f(x)]=(x+3)^2`

Explanation:

By definition, `(g@f)(x)=g[f(x)]`

`=g(x+3)`

`=(x+3)^2`