# Homework help

• Oct 27th 2008, 04:38 PM
student_0
Homework help
Hey I usually dont have trouble with my homework but my precalculus instructor gave us this for home work and I can't figure it out.

f(x) = x^3 + 2, g(x) = sin(x), s(x) = 3x - 4

and the question looks like this: (f o g o s)(x) i really don't remember this stuff from high school but I tired and this is what I got:

f(g(s(x))) >> f(g(3x - 4)) >> f(3sin(x) - 4) >> (3sin(x) - 4)^3 - 2

thats all I could do, im not too sure if im right. If anyone could shed some light on this problem i'd appreciate it very much.

thanks
• Oct 27th 2008, 06:06 PM
skeeter
$f[g(s(x))] =$

$f[g(3x-4)] =$

$f[\sin(3x-4)] =$

$\sin^3(3x-4) + 2$