Question

Please help! functions operations. explain please

Answer 1

`f^(-1)(x)=x^2-3`

Explanation:

Given
`f(x)=√(x+3)`

Let
`y=√(x+3)`

Interchange x and y

`x=√(y+3)`

Solve for y, by first squaring both sides

`x^2=y+3`

`x^2-3=y`

Hence

`f^(-1)(x)=x^2-3`

The last choice is correct