Are f(x) and g(x) inverse functions across the domain [3,+∞)?

A

Explanation:

For functions to be inverse, it must be true that f( g(x) ) = x and g( f(x) ) = x.

But for F( G(x) ), we have √( G(x) - 3 ) + 8

= √( (x+8)² - 3 - 3 ) + 8

= √( (x+8)² - 6 ) + 8

This -6 part should be cancelled out for functions to work out but we cannot do that, therefore F(x) and G(x) are not inverse.

d

step-by-step explanation:

d

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: