VaxoP Posted May 24, 2002 Share Posted May 24, 2002 This is a weird question, but makes you think. If 1/9 = 0.1111, 2/9 = 0.2222, 7/9 = 0.7777, 8/9 = 0.8888... whats 9/9? 1/3 = 0.3333. 2/3 = 0.6666, 3/3 = ? Whats 1/9 * 9? (1/9 = 0.11111 * 9 = 0.999999) Link to comment Share on other sites More sharing options...
Azmyth Posted May 24, 2002 Share Posted May 24, 2002 The answer is toast. I think. Er, what was the question again? :) Link to comment Share on other sites More sharing options...
sp00nman Posted May 24, 2002 Share Posted May 24, 2002 Originally posted by VaxoP This is a weird question, but makes you think. If 1/9 = 0.1111, 2/9 = 0.2222, 7/9 = 0.7777, 8/9 = 0.8888... whats 9/9? 1/3 = 0.3333. 2/3 = 0.6666, 3/3 = ? Whats 1/9 * 9? (1/9 = 0.11111 * 9 = 0.999999) You think too hard. :D Link to comment Share on other sites More sharing options...
Blahsted Posted May 24, 2002 Share Posted May 24, 2002 Ever think of rounding up? Link to comment Share on other sites More sharing options...
Pyro Posted May 24, 2002 Share Posted May 24, 2002 ever think ? Link to comment Share on other sites More sharing options...
kawai Posted May 24, 2002 Share Posted May 24, 2002 the calculator didn't round up, but if you are gonna do it by hand, you must round it off somewhere you are rounding numbers up, 1/3 is complete. Link to comment Share on other sites More sharing options...
redrope Posted May 24, 2002 Share Posted May 24, 2002 That is a good point. Never thought of that. It would be .9999999. Lol. :D Link to comment Share on other sites More sharing options...
Chipi Posted May 24, 2002 Share Posted May 24, 2002 the thing is that 1/3 isn't 0.33333, it's 0.333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333... an so on... Link to comment Share on other sites More sharing options...
Alien Venom Posted May 24, 2002 Share Posted May 24, 2002 Hopefully this explains: Link to comment Share on other sites More sharing options...
Tesseract Posted May 24, 2002 Share Posted May 24, 2002 Technically, no. As close as .999999999999999 is to 1, it is not the number 1. There is a statement that says that in a given interval there are an infinite amount of numbers. This means that no matter how large or small the interval is, there are an infinite amount of numbers you can derive from that interval. BTW, VaxoP, you bring up good points, but 1 is 1 and .99999... is .99999... . ;) Link to comment Share on other sites More sharing options...
VaxoP Posted May 24, 2002 Author Share Posted May 24, 2002 well if 1/3 = 0.333333333333333333333333333333333 repeating forever.. multiplying that by 3 would give 0.999999999999999999999999 forever correct? but multiplying 1/3 by 3 gives 1? Link to comment Share on other sites More sharing options...
Tesseract Posted May 24, 2002 Share Posted May 24, 2002 That's because multiplying .333333333333333 by 3 would give .999999999999999, but this is a terminating decimal and not a repeating decimal. Since 1/3 yields a repeating decimal (.33333333...), you really cannot multiply the decimal by 3 and get an accurate result (.99999999...), hence 1/3 * 3 = 3/3 = 1 Link to comment Share on other sites More sharing options...
jayp6969 Posted May 24, 2002 Share Posted May 24, 2002 the way you are figureing it out are to differerent formulas one is fractions and the other is decimal so it would be multiplied differently:D Link to comment Share on other sites More sharing options...
linsook Posted May 24, 2002 Share Posted May 24, 2002 hello????? never passed grade 9 math? Link to comment Share on other sites More sharing options...
MaRkY Posted May 24, 2002 Share Posted May 24, 2002 Alien Venom love the pic, it remembers me to my school time :) Link to comment Share on other sites More sharing options...
jayp6969 Posted May 24, 2002 Share Posted May 24, 2002 Originally posted by linsook no actaully..... 0.33333333333333... * 3 does not equal 0.999... but actaully 1 no actually it does equal .99999 it is always just thought of it beight rounded to the nerest decimal place Link to comment Share on other sites More sharing options...
Tesseract Posted May 24, 2002 Share Posted May 24, 2002 You cannot accurately obtain an answer by multiplying a real number by a repeating decimal. Use fractions whenever possible. Link to comment Share on other sites More sharing options...
jayp6969 Posted May 24, 2002 Share Posted May 24, 2002 Originally posted by codyg11 You cannot accurately obtain an answer by multiplying a real number by a repeating decimal. Use fractions whenever possible. thank you someone that finally knows math Link to comment Share on other sites More sharing options...
BroChaos Veteran Posted May 24, 2002 Veteran Share Posted May 24, 2002 blegh, stop remind me of school :p mathmaticians are all wacked out. if you add zero up infinity times you get 1. don't forget about 0! = 0*0=1. those are two of my faves. Link to comment Share on other sites More sharing options...
jayp6969 Posted May 24, 2002 Share Posted May 24, 2002 Originally posted by BroChaos blegh, stop remind me of school :p mathmaticians are all wacked out. if you add zero up infinity times you get 1. don't forget about 0! = 0*0=1. those are two of my faves. 0*0=0 man anything multiplied by zero always equals zero Link to comment Share on other sites More sharing options...
Tesseract Posted May 24, 2002 Share Posted May 24, 2002 Yeah, the infinity stuff really whacks up math, if it not already whacked up too much already for some people. Also confuses lots of people. Link to comment Share on other sites More sharing options...
BroChaos Veteran Posted May 24, 2002 Veteran Share Posted May 24, 2002 0*0=0 man anything multiplied by zero always equals zero not really :p, i didn't make that stuff up. it can really equal 1 sometimes. Link to comment Share on other sites More sharing options...
Evil Dragon Posted May 24, 2002 Share Posted May 24, 2002 Saying that .9999999999999999999999999999999 is equal to one is like saying that Pi is equal to 3... That's a bit exaggerated but it's the only other explanation I could think of. You still can use Pi but it never gets you an exact number.... Ex: Pi*(2^2) {is not exactly equal to} 12.566370614359172953850573533118 Just as - (1/3)*3 {is not exactly equal to} .9999999999999999999999 Link to comment Share on other sites More sharing options...
Evil Dragon Posted May 24, 2002 Share Posted May 24, 2002 Originally posted by jayp6969 no actually it does equal .99999 it is always just thought of it beight rounded to the nerest decimal place No, actually it does equal one... He used the infinitesimal decimal .33333333 and although you cannot add this up on paper because it's infinite, the series actually is 1 - Ex: Sum(1/10(1/x)^x,x,1,infinity) = 3, but try working that out on paper... You can't cuz of the infinity above the Sum. PS: This is a function of summation notation. Link to comment Share on other sites More sharing options...
VaxoP Posted May 24, 2002 Author Share Posted May 24, 2002 i love the responses im getting :) - just trying to mess with peoples heads heres something... 1/3 = 0.333333 repeating forever - correct? correct. multiply that by 3. no matter now many 3's are there (infinite amount) if you multiple that by 3, you will get an infinite amount of 9's (0.9999 forever).. tell me - where does the 1 come from? Link to comment Share on other sites More sharing options...
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