I remember an episode of The Simpsons, where a mathematic geek received no attention of his fellow peers, so he shouted: PI IS EXACTLY THREE! I just couldn't help laughing:D OK, over to my recent low-leveled mathematics-discovery, regarding whether i is not equal to 1, -1 nor anything like that. I first wrote this, to ensure I understood the principle: 9^0.5 = 3 9^0.5*9 = 3*9 27 = 27 Now, over to the subject: i^4 = 1 1^0.25 = i (1^0.25)*1*1*1 = (i*1*1*1) //here's the issue 1 = i I didn't even get here earlier, I was trapped in my own confusing thinking, though when I ended up here - I saw the flaw at once.. But now, I forgot it Anyone'd like to refresh me? I can't use the Google calculator either, since it doesn't show flaws, it only calculates what you put in on one side, not both.