by tommywallach Fri Sep 12, 2014 6:04 pm
Hey Xero,
Well done! I realize that my explanation was actually misleading. I said you should try values, but that's exactly what you CANNOT do here. Oy. Apologies.
Your method is indeed the way to do it. You could also have simplified from the beginning like so:
1/2 f(x) = f(1/2x)
-->
f(x) = 2 f(1/2x)
Which might have made things a little bit faster, or even allow you to logic out that only multiplication will render these two things equal.
But either way, you did a great job!
-t