PreCal
posted by Hannah on .
Find (a) f X g , (b) g X f, and (c) f X f
f(x) = 3sqrt x1 g(x) = x^3 + 1
For the f(x) the 3 is little above the sqrt sign.
my answers were:
(a) = 3sqrt x^4 1
(b) = x^4 1
(c) = 6sqrt x+1
These answers are wrong but I do not know how to do this

f(x)= cubrt(x1)
g(x)=x^3+1
f(g(x))= cubrt(x^3+11)=x
g(f(x)= f(x)^3+1=(cubrt(x1)^31=x
f(f)= cubr(cubrt(x1)1) which might be simplified, but I don't see it now.