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  3. one equal to two ?

one equal to two ?

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  • Kornfeld Eliyahu PeterK Kornfeld Eliyahu Peter

    It has nothing to do with 0 equal to 0 or not (which is a mathematical game only), but the fact that division by zero is not permitted (or more precisely the outcome is undefined)...

    Skipper: We'll fix it. Alex: Fix it? How you gonna fix this? Skipper: Grit, spit and a whole lotta duct tape.

    P Offline
    P Offline
    PIEBALDconsult
    wrote on last edited by
    #42

    Yes, but the damage is done before that.

    Kornfeld Eliyahu PeterK 1 Reply Last reply
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    • Kornfeld Eliyahu PeterK Kornfeld Eliyahu Peter

      It has nothing to do with 0 equal to 0 or not (which is a mathematical game only), but the fact that division by zero is not permitted (or more precisely the outcome is undefined)...

      Skipper: We'll fix it. Alex: Fix it? How you gonna fix this? Skipper: Grit, spit and a whole lotta duct tape.

      T Offline
      T Offline
      tayoufabrice
      wrote on last edited by
      #43

      1=1 a=a <=> a/a=1 a²=a² ?? a=b <=> a/b=1 a²=b² ?? then a=b a-c = b-c ? a-a = a-a (assuming a=b and a=c) ?? Where is the division by zero ? I've added c at both sides of =

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      • T tayoufabrice

        Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

        R Offline
        R Offline
        R Giskard Reventlov
        wrote on last edited by
        #44

        tayoufabrice wrote:

        Where is the error ?

        In between your ears: obviously the answer is 42.

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        • T tayoufabrice

          Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

          P Offline
          P Offline
          phil o
          wrote on last edited by
          #45

          a - a = 0

          You cannot get anything useful from a multiplication once it has involved a zero term.

          5 x 0 = 12012 x 0

          does not mean that

          5 = 12012

          There are two kinds of people in the world: those who can extrapolate from incomplete data.

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          • T tayoufabrice

            1=1 a=a <=> a/a=1 a²=a² ?? a=b <=> a/b=1 a²=b² ?? then a=b a-c = b-c ? a-a = a-a (assuming a=b and a=c) ?? Where is the division by zero ? I've added c at both sides of =

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            P Offline
            PIEBALDconsult
            wrote on last edited by
            #46

            At the final step, you effectively have a=0, which means that a/a=1 on the second line is division by zero. But why were b and c introduced? It's just nonsense. Additionally, a²=b² certainly does not mean a=b.

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            • T tayoufabrice

              Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

              P Offline
              P Offline
              pt1401
              wrote on last edited by
              #47

              The error is simultaneously in line 5, your misunderstanding of basic maths, and your posting of this question.

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              • T tayoufabrice

                Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

                Mike HankeyM Offline
                Mike HankeyM Offline
                Mike Hankey
                wrote on last edited by
                #48

                The error is I haven't had coffee yet.

                New version: WinHeist Version 2.1.0 There's a fine line between crazy and free spirited and it's usually a prescription. I'm currently unsupervised, I know it freaks me out too but the possibilities are endless.

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                • P PIEBALDconsult

                  At the final step, you effectively have a=0, which means that a/a=1 on the second line is division by zero. But why were b and c introduced? It's just nonsense. Additionally, a²=b² certainly does not mean a=b.

                  T Offline
                  T Offline
                  tayoufabrice
                  wrote on last edited by
                  #49

                  a=0 never means a/a=0 (a can never be 0). a=a <=> a/a=a/a <=> 1=1 I could fix the post as : Given a C ]--;0[ U ]0;++[ (meaning 0 excluded)

                  Kornfeld Eliyahu PeterK 1 Reply Last reply
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                  • P phil o

                    a - a = 0

                    You cannot get anything useful from a multiplication once it has involved a zero term.

                    5 x 0 = 12012 x 0

                    does not mean that

                    5 = 12012

                    There are two kinds of people in the world: those who can extrapolate from incomplete data.

                    T Offline
                    T Offline
                    tayoufabrice
                    wrote on last edited by
                    #50

                    very very TRUE:thumbsup::thumbsup:

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                    • R R Giskard Reventlov

                      tayoufabrice wrote:

                      Where is the error ?

                      In between your ears: obviously the answer is 42.

                      T Offline
                      T Offline
                      tayoufabrice
                      wrote on last edited by
                      #51

                      the answer is 42 :laugh: :laugh:

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                      • T tayoufabrice

                        a=0 never means a/a=0 (a can never be 0). a=a <=> a/a=a/a <=> 1=1 I could fix the post as : Given a C ]--;0[ U ]0;++[ (meaning 0 excluded)

                        Kornfeld Eliyahu PeterK Offline
                        Kornfeld Eliyahu PeterK Offline
                        Kornfeld Eliyahu Peter
                        wrote on last edited by
                        #52

                        Which means that you have an equation system and not a single equation...It's a different thing to solve...

                        Skipper: We'll fix it. Alex: Fix it? How you gonna fix this? Skipper: Grit, spit and a whole lotta duct tape.

                        "It never ceases to amaze me that a spacecraft launched in 1977 can be fixed remotely from Earth." ― Brian Cox

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                        • P PIEBALDconsult

                          Yes, but the damage is done before that.

                          Kornfeld Eliyahu PeterK Offline
                          Kornfeld Eliyahu PeterK Offline
                          Kornfeld Eliyahu Peter
                          wrote on last edited by
                          #53

                          You mean, when OP went to learn math?

                          Skipper: We'll fix it. Alex: Fix it? How you gonna fix this? Skipper: Grit, spit and a whole lotta duct tape.

                          "It never ceases to amaze me that a spacecraft launched in 1977 can be fixed remotely from Earth." ― Brian Cox

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                          • T tayoufabrice

                            Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

                            R Offline
                            R Offline
                            RedDk
                            wrote on last edited by
                            #54

                            This is best asked here: http://www.codeproject.com/script/Answers/List.aspx?tags=900&alltags=true[^]

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                            • P PIEBALDconsult

                              Abbott and Costello said it better.

                              M Offline
                              M Offline
                              Mark_Wallace
                              wrote on last edited by
                              #55

                              PIEBALDconsult wrote:

                              Abbott and Costello_, who were on first,_ said it better.

                              It was missing something.

                              I wanna be a eunuchs developer! Pass me a bread knife!

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                              • T tayoufabrice

                                Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

                                L Offline
                                L Offline
                                Lost User
                                wrote on last edited by
                                #56

                                welcome to the lounge. I know this isn't quite your first post - but nearly. And I would like to apologise for the negativity your post received. For someone who hadn't seen that 'proof' before it may have been interesting - as you can see, not only have the majority here seen it (more than once!) but they like to stuff it down your throat - whether to big-note themselves or simply in an attempt to belittle you we cannot tell. They should be ashamed. Merry Xmas

                                PooperPig - Coming Soon

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                                • T tayoufabrice

                                  Let read this : 1=1 a=a a²=a² a²-a²=a²-a² a(a-a)=(a+a)(a-a) a=a+a a(1)=a(1+1) 1=1+1 1=2 Where is the error ?

                                  M Offline
                                  M Offline
                                  Mitchell J
                                  wrote on last edited by
                                  #57

                                  How about this... ;P Start with this: 1/9 = 1/9 Then convert one side to decimal equivalent (which is infinitely recurring) 1/9 = 0.11111111111111111111111111111111111111111111111111111111...(etc etc) Then multiply both sides by nine 1 = 0.9999999999999999999999999999999999999999999999999999999999...(etc etc) Therefore, 1 is equal to 0.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...(where the 9's are in infinite recursion). And yes, this actually is mathematically correct.

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                                  • L Lost User

                                    welcome to the lounge. I know this isn't quite your first post - but nearly. And I would like to apologise for the negativity your post received. For someone who hadn't seen that 'proof' before it may have been interesting - as you can see, not only have the majority here seen it (more than once!) but they like to stuff it down your throat - whether to big-note themselves or simply in an attempt to belittle you we cannot tell. They should be ashamed. Merry Xmas

                                    PooperPig - Coming Soon

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                                    T Offline
                                    tayoufabrice
                                    wrote on last edited by
                                    #58

                                    Thank you Max and happy new Xear

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                                    • M Mitchell J

                                      How about this... ;P Start with this: 1/9 = 1/9 Then convert one side to decimal equivalent (which is infinitely recurring) 1/9 = 0.11111111111111111111111111111111111111111111111111111111...(etc etc) Then multiply both sides by nine 1 = 0.9999999999999999999999999999999999999999999999999999999999...(etc etc) Therefore, 1 is equal to 0.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...(where the 9's are in infinite recursion). And yes, this actually is mathematically correct.

                                      T Offline
                                      T Offline
                                      tayoufabrice
                                      wrote on last edited by
                                      #59

                                      I agree but here 1/9 = 0.111111111111111111111111...... is not really true ; we lost 0.000000000000000000000.......9 I could write 1/9~= 0.111111111111111111111111...... then 1 ~= 0.9999999999999999999999999...... ??

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                                      • T tayoufabrice

                                        I agree but here 1/9 = 0.111111111111111111111111...... is not really true ; we lost 0.000000000000000000000.......9 I could write 1/9~= 0.111111111111111111111111...... then 1 ~= 0.9999999999999999999999999...... ??

                                        M Offline
                                        M Offline
                                        Mitchell J
                                        wrote on last edited by
                                        #60

                                        tayoufabrice wrote:

                                        1/9 = 0.111111111111111111111111...... is not really true ; we lost 0.000000000000000000000.......9

                                        Wish I could agree, but I can't... read all about it[^] :-D Even google 0.999999999999999 = 1[^] if you're still unconvinced.

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                                        • M Mitchell J

                                          tayoufabrice wrote:

                                          1/9 = 0.111111111111111111111111...... is not really true ; we lost 0.000000000000000000000.......9

                                          Wish I could agree, but I can't... read all about it[^] :-D Even google 0.999999999999999 = 1[^] if you're still unconvinced.

                                          T Offline
                                          T Offline
                                          tayoufabrice
                                          wrote on last edited by
                                          #61

                                          Ah là là :laugh: Mathematics !! (French laughing)

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