1. The problem statement, all variables and given/known data http://img142.imageshack.us/img142/8564/76203773.jpg [Broken] 2. Relevant equations I need to somehow express the above equation in terms of logax, logay,and logaz. 3. The attempt at a solution I got the answer loga * [ |x|*sqrt (x)] + loga * [|y|] - loga * [z] But I'd just like to get your guys' opinion, because I have the feeling I'm wrong, lol.