----------------------------------- Martin Tue Sep 09, 2003 11:40 pm Math Proof ----------------------------------- I just want to know what people think about this. Please don't reply to this post just yet, only vote. Here's the question. Does 0.999... (repeating) = 1, or is it just really really close? ----------------------------------- octopi Wed Sep 10, 2003 12:18 am ----------------------------------- Removed my comments ----------------------------------- Martin Wed Sep 10, 2003 3:24 pm ----------------------------------- The not posting part was more for people who don't know the answer, so they wouldn't have anyone pushing them in either direction... ----------------------------------- Dan Wed Sep 10, 2003 4:54 pm ----------------------------------- wow it is at 50% / 50% right now, i whonder how this one will turn out. ----------------------------------- Martin Fri Sep 12, 2003 3:52 pm ----------------------------------- At the time of writing this the tally was: 6 said Yes 9 said Almost Well, here's the proof. Let x = 0.999...repeating therefor 10x = 9.9999...repeating 10x - x = 9.999..repeating - 0.9999...repeating therefor 9x = 9, and x = 1. ooo ahh. ----------------------------------- Dan Fri Sep 12, 2003 4:12 pm ----------------------------------- me and octopi talked about this for arouged about this for about 2 hours on msn. Turst me, 0.9999... != 1. To complet that math you have there you HAVE TO round if you dont it will never end, there for 0.9999... rounded is 1. that is why you are geting 1. you cant subtrace 0.9999... from 9.9999... with out rounding, it whould go on forover and you whould never get an aswer. so to sum that up 0.9999... != 1 now let the flaming start!!! ----------------------------------- octopi Fri Sep 12, 2003 4:23 pm ----------------------------------- Since you let _ x=0.9You can subtract x from _ 9.9You don't need to round anything. An easier solution is this: 1/3 + 2/3 = 3/3 _ _ 0.3 + 0.6 = 1 _ 0.9 = 1 ----------------------------------- PaddyLong Fri Sep 12, 2003 5:40 pm ----------------------------------- no 0.9999 is not = to 1 ... consider this ... 1 / (1 - x) now do this for x = .9repeating and x = 1 1 / (1 - .9repeating) 1 / 0.0..lots of zeros...1 1 / (1 - 1) 1 / 0