Question

Let f(x) = x ^ 2 and g(x) = x - 3 . Evaluate (g?f)(0).

Answer 1

`g(f(0))=-3`

Explanation:

we have

`f(x)=x^(2)`

`g(x)=x-3`

we know that

`(g o f)(x)=g(f(x))`

substitute the variable x in the function g(x) by the function f(x)

so

`g(f(x))=x^(2)-3`

Evaluate
`g(f(0))`

For x=0

`g(f(0))=0^(2)-3`

`g(f(0))=-3`