Just wanted to say hi before I start my post! As you may know there is a property of the absolute value that states; for [tex]a, b \in R[/tex]; [tex]|ab| = |a||b|[/tex] Well, my friend asked me if I knew a proof for this... but I don't know... How can we prove this statement/property? I know there is a proof for the triangle inequality but for this I really don't know but I'm curious. I'd appreciate it if anyone could show me any kind of proof or send me some links etc. Thanks!