Question

Let f(x)=√6x and g(x) = x -3. What's the smallest number that is in the domain of fog?

Answer 1

Let f(x) = x2-1, g(x) = 3x-1

Domain f = R
Domain g = R

fog (x) = f [g(x)]
(range of g C domain of f )

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

= 9x2 + 1 - 6x - 1
= 9x2 - 6x

Domain fog = R

Answer 2

hope i helped?

Answer 3

Thanks, but you kind of lost me here.

Answer 4

@Lilium

Answer 5

yes?