Hi all, I'm re-reading The Art of Electronics (before, I would read as much as I could, and skipped most of the exercises with hardcore maths). Now I am trying to get every exercise done. But I#ve only got 33 pages in before I need some help guys. :/ Page 33, Exercise 1.17: Show that if A=BC, then A=BC, where A,B, and C are magnitudes. Hint: Represent each complex number in polar form, ie., A=Ae^(iθ). Now, I haven't had much formal education on complex numbers (about three lessons, and some lunch-time help with something), so all other things I have learnt have been on the internet. I have no idea where to start with this. I am not sure what is meant with the bold characters? I've tried looking back, but alas, to no avail. Would someone mind helping me get there? Many thanks, Sparky P.S. I'd just like to say that I am not a uni student, just someone doing this for fun! I have given it a shot, but nothing which has made any real sense.