You are very welcome!Originally Posted bymazdatuner

and

a) You need to find:

So.

(You forgot to add the last 3.)

b) You need to be a bit careful when considering the domain. At first blush it looks like the domain is because there are no (apparent) restrictions on the domain. However, there IS a restriction given by the F(x): . So we can't actually have any x less than 3 in G(F(x)). This is subtle and implies that there actually IS a distinction between and , which of course there is.

-Dan