Simple but Unfamilliar Algebra

[tanky322]

This really isn't a homework question, but I figured its the best place for it.

I have no idea what this means. It was posted on another forum I frequent. The poster said he is an accounting professor, and a student brought this up from another class. The problem is as follows:

I think the X in the box just stands for f(x), and the two boxes stands for f(f(2)). But this is just an assumption.

Thanks a lot,

Andrew

 

[symbolipoint]

Tanky322, you seem to be correct. The "box of x" must be "function of x". Use "2" and find the value of the function; then take this value and use it again as the value to use for x. The result is then f(f(2)).