Morning Forum I am having issues with the following question any help would be appreciated:
Yes it's a composition of functions.
Let me put it this way.
Say you had a function $\displaystyle f(x)$.
If you evaluated it at say, point $\displaystyle x = a$ you would have to replace all the x's with a's.
Here, if we had $\displaystyle f \circ g(x) = f(g(x))$, instead of substituting x with a, we'd see what happens if we replaced all the x's with whatever $\displaystyle g(x)$ is.
Does that make sense?