I have just started learning functions and there is a question on my homework like this:

Let
f(x) = x2 and g(x) = x + 5,
and find the following.

then it has four answer blanks to fill in
with questions like these

(f o g)(3)

Question

I have just started learning functions and there is a question on my homework like this:

Let 
f(x) = x2 and g(x) = x + 5,
 and find the following.

then it has four answer blanks to fill in
with questions like these

(f o g)(3)  <- ok the o in the middle is a little open circle but not a dot.. I have no idea what it means.

Please tell me what the little circle means and what I am supposed to do to get the answer.

Thanks!

radar · Answer

Look in your book index for "composite function"

anonymous · Answer

I have no access to my book at the moment.

radar · Answer

The composition of the functions f and g is given by|dw:1350503949368:dw|