Spot on, martoman. Though I'd be pedantic and say
, it doesn't make much difference in the qualitative sense. You've done it again. =]
Now can everyone appreciate why I say 'VCAA won't ask for this EVER'? 
If they gave you that equation to work with and ask you to reason from it (given it would be a one mark question, so as to seperate the true skillzors from the less(zors?)) i'd think that would be okay.... though that would assume a mathematical knowledge far beyond the course. Lol, some of the chem kids in my class couldn't get the pH right and the reason was they were working with ln..... and didn't understand the difference.
Gah, i guess, in a self-defeating conclusion, yes, this is beyond the course.