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  3. one equal to two ?

one equal to two ?

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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

                    T Offline
                    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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                          • 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 ?

                            D Offline
                            D Offline
                            Daniel Pfeffer
                            wrote on last edited by
                            #62

                            a(a-a) = (a+a)(a-a) // divide by (a-a), i.e. divide by 0 a = a+a Division by zero is a no-no because it can lead to "impossible" results like the above.

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                            • D Daniel Pfeffer

                              a(a-a) = (a+a)(a-a) // divide by (a-a), i.e. divide by 0 a = a+a Division by zero is a no-no because it can lead to "impossible" results like the above.

                              T Offline
                              T Offline
                              tayoufabrice
                              wrote on last edited by
                              #63

                              I could fix the post as : Given a C ]--;0[ U ]0;++[ (meaning 0 excluded) Now ??

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                              • T tayoufabrice

                                I could fix the post as : Given a C ]--;0[ U ]0;++[ (meaning 0 excluded) Now ??

                                D Offline
                                D Offline
                                Daniel Pfeffer
                                wrote on last edited by
                                #64

                                The value of a is irrelevant; a - a == 0, and factoring out a - a is division by 0, which is forbidden. I am not a mathematician, so I don't know if it is possible to create a self-consistent arithmetic in which division by 0 does not result in nonsensical results. All I know is that in the arithmetic I learnt in school it is forbidden.

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                                • D Daniel Pfeffer

                                  The value of a is irrelevant; a - a == 0, and factoring out a - a is division by 0, which is forbidden. I am not a mathematician, so I don't know if it is possible to create a self-consistent arithmetic in which division by 0 does not result in nonsensical results. All I know is that in the arithmetic I learnt in school it is forbidden.

                                  T Offline
                                  T Offline
                                  tayoufabrice
                                  wrote on last edited by
                                  #65

                                  Sure ! :laugh: number can never be divided by zero 0 ; even 0/0 :confused: It is the real error of my process

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