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  • C CPallini

    By maths. There's no difference.

    H Offline
    H Offline
    HobbyProggy
    wrote on last edited by
    #20

    Allright, tell that the next flightcomputer that breakes down because he multiplied 0,333 and didn't get to 1 ;)

    Rules for the FOSW ![^]

    if(this.signature != "")
    {
    MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
    }
    else
    {
    MessageBox.Show("404-Signature not found");
    }

    C Y 2 Replies Last reply
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    • H HobbyProggy

      Allright, tell that the next flightcomputer that breakes down because he multiplied 0,333 and didn't get to 1 ;)

      Rules for the FOSW ![^]

      if(this.signature != "")
      {
      MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
      }
      else
      {
      MessageBox.Show("404-Signature not found");
      }

      C Offline
      C Offline
      CPallini
      wrote on last edited by
      #21

      You know, float are not real numbers. (likewise Computer Science is not Mathematics) :-D

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      • C CPallini

        You know, float are not real numbers. (likewise Computer Science is not Mathematics) :-D

        H Offline
        H Offline
        HobbyProggy
        wrote on last edited by
        #22

        CPallini wrote:

        (likewise Computer Science is not Mathematics)

        But its both logic :) And 0,999 is not 1 it's even written different :sigh: But i guess we could debate ages about that

        Rules for the FOSW ![^]

        if(this.signature != "")
        {
        MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
        }
        else
        {
        MessageBox.Show("404-Signature not found");
        }

        C Richard DeemingR 2 Replies Last reply
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        • H HobbyProggy

          CPallini wrote:

          (likewise Computer Science is not Mathematics)

          But its both logic :) And 0,999 is not 1 it's even written different :sigh: But i guess we could debate ages about that

          Rules for the FOSW ![^]

          if(this.signature != "")
          {
          MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
          }
          else
          {
          MessageBox.Show("404-Signature not found");
          }

          C Offline
          C Offline
          CPallini
          wrote on last edited by
          #23

          Right: we could follow all the nines until we find a difference. :laugh:

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          • H HobbyProggy

            CPallini wrote:

            (likewise Computer Science is not Mathematics)

            But its both logic :) And 0,999 is not 1 it's even written different :sigh: But i guess we could debate ages about that

            Rules for the FOSW ![^]

            if(this.signature != "")
            {
            MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
            }
            else
            {
            MessageBox.Show("404-Signature not found");
            }

            Richard DeemingR Offline
            Richard DeemingR Offline
            Richard Deeming
            wrote on last edited by
            #24

            Take your pick: How Can 0.999... = 1? | Purplemath[^] For example:

              x = 0.999...
            

            10x = 9.999...
            10x - x = 9.000...
            9x = 9
            x = 1

            EDIT: As Nagy said[^], 2+ hours ago.


            "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

            "These people looked deep within my soul and assigned me a number based on the order in which I joined" - Homer

            H K 3 Replies Last reply
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            • Richard DeemingR Richard Deeming

              Take your pick: How Can 0.999... = 1? | Purplemath[^] For example:

                x = 0.999...
              

              10x = 9.999...
              10x - x = 9.000...
              9x = 9
              x = 1

              EDIT: As Nagy said[^], 2+ hours ago.


              "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

              H Offline
              H Offline
              HobbyProggy
              wrote on last edited by
              #25

              1/6 ->*6 0,966666666

              x = 0,9666
              10x = 9,6666
              10x -x = 8,7066
              9x = 8,7066
              x = 0,9674

              !

              Rules for the FOSW ![^]

              if(this.signature != "")
              {
              MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
              }
              else
              {
              MessageBox.Show("404-Signature not found");
              }

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              • Richard DeemingR Richard Deeming

                Take your pick: How Can 0.999... = 1? | Purplemath[^] For example:

                  x = 0.999...
                

                10x = 9.999...
                10x - x = 9.000...
                9x = 9
                x = 1

                EDIT: As Nagy said[^], 2+ hours ago.


                "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                H Offline
                H Offline
                HobbyProggy
                wrote on last edited by
                #26

                1/6 = 0,166666 ->*6 0,9996

                x = 0,9996
                10x = 9,996
                10x -x = 8,9964
                9x = 8,9964
                x = 0,9996

                ?

                Rules for the FOSW ![^]

                if(this.signature != "")
                {
                MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                }
                else
                {
                MessageBox.Show("404-Signature not found");
                }

                Richard DeemingR 1 Reply Last reply
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                • H HobbyProggy

                  1/6 = 0,166666 ->*6 0,9996

                  x = 0,9996
                  10x = 9,996
                  10x -x = 8,9964
                  9x = 8,9964
                  x = 0,9996

                  ?

                  Rules for the FOSW ![^]

                  if(this.signature != "")
                  {
                  MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                  }
                  else
                  {
                  MessageBox.Show("404-Signature not found");
                  }

                  Richard DeemingR Offline
                  Richard DeemingR Offline
                  Richard Deeming
                  wrote on last edited by
                  #27

                  HobbyProggy wrote:

                  1/6 = 0,166666 ->*6 0,9996

                  Nope - 6 × 0.1666... = 0.9999... It's simple multiplication:

                  1 x 6 = 6 (0.6)
                  6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.96)
                  6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.996)
                  6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.9996)
                  6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.99996)
                  etc.

                  Because you're repeating the operation an infinite number of times, there's no point where you stop and leave the last digit as 6. There's always another digit to the right which needs to be multiplied by 6, carrying the 3 into the current column.


                  "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                  "These people looked deep within my soul and assigned me a number based on the order in which I joined" - Homer

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                  • Richard DeemingR Richard Deeming

                    HobbyProggy wrote:

                    1/6 = 0,166666 ->*6 0,9996

                    Nope - 6 × 0.1666... = 0.9999... It's simple multiplication:

                    1 x 6 = 6 (0.6)
                    6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.96)
                    6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.996)
                    6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.9996)
                    6 x 6 = 36 = add 3 to the column on the left (6 + 3 = 9), and put 6 in this column (0.99996)
                    etc.

                    Because you're repeating the operation an infinite number of times, there's no point where you stop and leave the last digit as 6. There's always another digit to the right which needs to be multiplied by 6, carrying the 3 into the current column.


                    "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                    H Offline
                    H Offline
                    HobbyProggy
                    wrote on last edited by
                    #28

                    So this works only for 0.999999 ? Because the 6 at the end is in this case important to show that it wont be a 1 in the end :) But nevermind, this is all just playing with numbers :)

                    Rules for the FOSW ![^]

                    if(this.signature != "")
                    {
                    MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                    }
                    else
                    {
                    MessageBox.Show("404-Signature not found");
                    }

                    Richard DeemingR N 2 Replies Last reply
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                    • H HobbyProggy

                      So this works only for 0.999999 ? Because the 6 at the end is in this case important to show that it wont be a 1 in the end :) But nevermind, this is all just playing with numbers :)

                      Rules for the FOSW ![^]

                      if(this.signature != "")
                      {
                      MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                      }
                      else
                      {
                      MessageBox.Show("404-Signature not found");
                      }

                      Richard DeemingR Offline
                      Richard DeemingR Offline
                      Richard Deeming
                      wrote on last edited by
                      #29

                      HobbyProggy wrote:

                      Because the 6 at the end is ...

                      But there isn't a 6 at the "end", because there isn't an "end"! :laugh: Think of it like this:

                      using System;

                      static class Program
                      {
                      static void Main()
                      {
                      while (true)
                      {
                      Console.WriteLine("9");
                      }

                          Console.WriteLine("Squirrel!");
                      }
                      

                      }

                      If you run that program, how long will you have to wait before it prints "Squirrel"?


                      "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                      "These people looked deep within my soul and assigned me a number based on the order in which I joined" - Homer

                      H 1 Reply Last reply
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                      • Richard DeemingR Richard Deeming

                        HobbyProggy wrote:

                        Because the 6 at the end is ...

                        But there isn't a 6 at the "end", because there isn't an "end"! :laugh: Think of it like this:

                        using System;

                        static class Program
                        {
                        static void Main()
                        {
                        while (true)
                        {
                        Console.WriteLine("9");
                        }

                            Console.WriteLine("Squirrel!");
                        }
                        

                        }

                        If you run that program, how long will you have to wait before it prints "Squirrel"?


                        "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                        H Offline
                        H Offline
                        HobbyProggy
                        wrote on last edited by
                        #30

                        STACK OVERFLOW :-O nvm

                        Rules for the FOSW ![^]

                        if(this.signature != "")
                        {
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                        • C CPallini

                          You know, float are not real numbers. (likewise Computer Science is not Mathematics) :-D

                          N Offline
                          N Offline
                          Nelek
                          wrote on last edited by
                          #31

                          Do you mean they are imaginary? :doh: :doh: :doh: This is getting more and more difficult by moments. I think I am grabbing a bier, maybe seeing it double makes it easier :rolleyes: ;P :laugh: :laugh: I'll get my coat

                          M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you Rating helpful answers is nice, but saying thanks can be even nicer.

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                          • H HobbyProggy

                            So this works only for 0.999999 ? Because the 6 at the end is in this case important to show that it wont be a 1 in the end :) But nevermind, this is all just playing with numbers :)

                            Rules for the FOSW ![^]

                            if(this.signature != "")
                            {
                            MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                            }
                            else
                            {
                            MessageBox.Show("404-Signature not found");
                            }

                            N Offline
                            N Offline
                            Nelek
                            wrote on last edited by
                            #32

                            mmm working by 9, not working by 6 what about 69? does it works? Oh, wait... I think I stop now since I am about to break the KSS rule :laugh: :laugh: I am still on the way getting my coat

                            M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you Rating helpful answers is nice, but saying thanks can be even nicer.

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                            • M Marc Clifton

                              Ah, the ol' divide by zero trick. I think my math teacher did that when I was in 8th grade. Almost 40 years ago. And I'm sure it's older than that. ;) Marc

                              Imperative to Functional Programming Succinctly Contributors Wanted for Higher Order Programming Project!

                              C Offline
                              C Offline
                              Corporal Agarn
                              wrote on last edited by
                              #33

                              Since I remember it from math about that time it has to be old. :-D How can I remember this but cannot find my car keys?

                              Mongo: Mongo only pawn... in game of life.

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                              • H HobbyProggy

                                Dominic Burford wrote:

                                x2 - y2 = xy - y2. Dividing by (x-y), obtain x + y = y.

                                Wrong... aint it? x2 -y2 / (x-y) => x+y xy -y2 / (x-y) => y+y xy / x-y => 1*1/1-1 => (actually how could you divide this when there is a minus...) y2 / x-y => y/x-1 => (actually how could you devide this when there is a minus...) But i guess thats bullshit 2 because it "should"? be x2/x-y - y2/x-y which ruins everything :) Okay screw everything... you are wrong, thats all i can say :)

                                Rules for the FOSW ![^]

                                if(this.signature != "")
                                {
                                MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                                }
                                else
                                {
                                MessageBox.Show("404-Signature not found");
                                }

                                K Offline
                                K Offline
                                kiLLe_512
                                wrote on last edited by
                                #34

                                if(!string.IsNullOrEmpty(this.signature)) ftfy

                                H 1 Reply Last reply
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                                • Richard DeemingR Richard Deeming

                                  Take your pick: How Can 0.999... = 1? | Purplemath[^] For example:

                                    x = 0.999...
                                  

                                  10x = 9.999...
                                  10x - x = 9.000...
                                  9x = 9
                                  x = 1

                                  EDIT: As Nagy said[^], 2+ hours ago.


                                  "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                                  K Offline
                                  K Offline
                                  kiLLe_512
                                  wrote on last edited by
                                  #35

                                  That's bloody brilliant!

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                                  • H HobbyProggy

                                    The only thing i can agree with is that 1 != 3/3 (at least not exactly) because 1/3 is 0,333... and multiplied with 3 it is just 0,99999.... which is technically 1 but not 100%

                                    Rules for the FOSW ![^]

                                    if(this.signature != "")
                                    {
                                    MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                                    }
                                    else
                                    {
                                    MessageBox.Show("404-Signature not found");
                                    }

                                    F Offline
                                    F Offline
                                    Florgenator
                                    wrote on last edited by
                                    #36

                                    Actually, yes 0.9999..... is in fact 1: x = 0.99999.... 10 x = 9.999999.... multiply by 10 10 x = 9 + 0.99999.... split right side into arithmetic expression 10 x = 9 + x replace 0.9999.... with "x" 9 x = 9 subtract "x" from both sides x = 1 divide by 9. without dividing by "0"

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                                    • K kiLLe_512

                                      if(!string.IsNullOrEmpty(this.signature)) ftfy

                                      H Offline
                                      H Offline
                                      HobbyProggy
                                      wrote on last edited by
                                      #37

                                      Thank god signature is not an object you first have to convert .ToString() right?

                                      Rules for the FOSW ![^]

                                      if(this.signature != "")
                                      {
                                      MessageBox.Show("This is my signature: " + Environment.NewLine + signature);
                                      }
                                      else
                                      {
                                      MessageBox.Show("404-Signature not found");
                                      }

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                                      • D Dominic Burford

                                        x = y. Then x2 = xy. Subtract the same thing from both sides: x2 - y2 = xy - y2. Dividing by (x-y), obtain x + y = y. Since x = y, we see that 2 y = y. Thus 2 = 1, since we started with y nonzero. Subtracting 1 from both sides, 1 = 0. :wtf:

                                        "There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult." - C.A.R. Hoare Home | LinkedIn | Google+ | Twitter

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                                        MKJCP
                                        wrote on last edited by
                                        #38

                                        If you divide by zero you get sucked into the mathematical black hole where all logic is lost. But if it were true that 1=0, would that simplify chip design? "A little knowledge is a dangerous thing, drink deeply or taste not."

                                        Y 1 Reply Last reply
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                                        • D Dominic Burford

                                          x = y. Then x2 = xy. Subtract the same thing from both sides: x2 - y2 = xy - y2. Dividing by (x-y), obtain x + y = y. Since x = y, we see that 2 y = y. Thus 2 = 1, since we started with y nonzero. Subtracting 1 from both sides, 1 = 0. :wtf:

                                          "There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult." - C.A.R. Hoare Home | LinkedIn | Google+ | Twitter

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                                          B Offline
                                          BallsMcShaft
                                          wrote on last edited by
                                          #39

                                          The second statement is false. if x = y, then x2 does not equal xy; x to the second power equals xy. For example: if 1=1 then 1(2) does not equal 1(1) Bullshit from the start, not to mention the division by zero

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