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Does .9-repeating equal 1?

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  • "=0.00000000000 carrying on for infinity because there is no final 9"

    Then 0.9 recurring doesn't exist, and doesn't equal 1 - the question is unanswerable.
    www.my-piano.blogspot

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    • Originally posted by KrazyHorse


      0.9999 is not 1

      0.9999... means that you have an infinite string of 9s

      IN-FI-NITE

      Ever and anon, world without end, amen.

      0.9999... is 1

      Not for all intents and purposes, not to x degree of accuracy. In standard decimal representation they represent the same number. This is not an approximation. There is no error associated with it. They are mathematically interchangeable.

      In the name of Cantor, Leibniz and Russell, amen
      What, Dedekind doesn't get a mention? He had more to do with the definition of real numbers than any of the three you named!

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      • It's a stupid question, since numbers have no real existance, they are concepts that only exist in our heads used to help understand the world.

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        • Originally posted by Kuciwalker
          You forgot Ramo.
          Ramo's okay, but I've caught him a couple of times...
          12-17-10 Mohamed Bouazizi NEVER FORGET
          Stadtluft Macht Frei
          Killing it is the new killing it
          Ultima Ratio Regum

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          • Originally posted by KrazyHorse
            Very good.

            But you should also listen to LulThyme or civman.

            They know what they're talking about, generally.
            Kuci, too.

            It's a stupid question, since numbers have no real existance, they are concepts that only exist in our heads used to help understand the world.

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            • Originally posted by civman2000

              What, Dedekind doesn't get a mention? He had more to do with the definition of real numbers than any of the three you named!
              I just popped off three who had something to do with limits and infinities...
              12-17-10 Mohamed Bouazizi NEVER FORGET
              Stadtluft Macht Frei
              Killing it is the new killing it
              Ultima Ratio Regum

              Comment


              • Originally posted by civman2000

                Kuci, too.




                12-17-10 Mohamed Bouazizi NEVER FORGET
                Stadtluft Macht Frei
                Killing it is the new killing it
                Ultima Ratio Regum

                Comment


                • Yeah, but even when he's stupid he gets it once it's explained. And he wants to learn more and get better. He wouldn't answer someone else's question unless he knew what he was talking about.

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                  • I've run my mouth off a couple times when I had only the vaguest of clues what I was talking about.

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                    • Originally posted by civman2000
                      Yeah, but even when he's stupid he gets it once it's explained. And he wants to learn more and get better. He wouldn't answer someone else's question unless he knew what he was talking about.
                      Nah, I agree. Just being hard on the kid.

                      I've run my mouth off a couple times when I had only the vaguest of clues what I was talking about.


                      As you've started learning more I've noticed you getting more cautious.

                      It happens to everybody. The more you learn, the more you know that you don't know.
                      12-17-10 Mohamed Bouazizi NEVER FORGET
                      Stadtluft Macht Frei
                      Killing it is the new killing it
                      Ultima Ratio Regum

                      Comment


                      • Originally posted by Kuciwalker
                        As you've started learning more I've noticed you getting more cautious.
                        No. Its just easier to troll when you aren't saying anything at all.
                        Eventis is the only refuge of the spammer. Join us now.
                        Long live teh paranoia smiley!

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                        • That's why you don't see me getting pwn3d very often.

                          I'm always willing to admit my ignorance on a subject.

                          But when I do know something, I don't back down.

                          12-17-10 Mohamed Bouazizi NEVER FORGET
                          Stadtluft Macht Frei
                          Killing it is the new killing it
                          Ultima Ratio Regum

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                          • Well, Apolyton is like prison. You enter the prison, thinking you are tough. You are the biggest, the meanest.. you are a murderer. You're the top dog.

                            But the fact is, there's always someone bigger who comes and rapes you multiple times, leaving your ass bleeding. As a result, you become humble. It is a lesson that all great prisoners learn before they themselves become the rapists.

                            -Pekka Truth.
                            In da butt.
                            "Do not worry if others do not understand you. Instead worry if you do not understand others." - Confucius
                            THE UNDEFEATED SUPERCITIZEN w:4 t:2 l:1 (DON'T ASK!)
                            "God is dead" - Nietzsche. "Nietzsche is dead" - God.

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                            • I've only been raped a couple of times.

                              I got into an argument with Adam Smith about the economics of rail transportation in my first few months here.

                              That was dumb.

                              12-17-10 Mohamed Bouazizi NEVER FORGET
                              Stadtluft Macht Frei
                              Killing it is the new killing it
                              Ultima Ratio Regum

                              Comment


                              • The OP and poll did not qualify "equal" as in regards to any specified system. Meaning that all possible evaluation systems would have to uphold the equality for it to be true given the (lack of) qualifications present. Simply proving equality in one system does not address the full spectrum of possible systems allowed by the poll as it has been defined.

                                As already stated, aesthetically they are not always equal. (They can be though. From infinitely far away they would appear to be the same, right?) From an efficiency standpoint (say computational time) they are not equal unless dealing with an infinite amount of them. From an expression standpoint (be that typing, speaking, ect.) they are not equal either. Even from other possible mathmatics systems (be they useful or not) they are not necessarily equal.

                                As there was no qualification in the poll question or OP as to the system(s) the evaulation should be limited to, the only technically correct answer is no. If the question were qualified to the point where it eliminated 99.99...% of the systems which allow for potential "no" answers, the answer could be yes.

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