1 = 2

Discussion in 'General Chat' started by orange_ranger, Mar 7, 2007.

  1. #1
    1 = 2

    Proof

    Let a = b, a,b>0

    a^2 - a^2 = b^2 - b^2
    a^2 - b^2 = ab - b^2
    (a+b)(a-b) = b(a-b)
    Divide both sides by (a-b),
    a+b = b
    Since a=b, then
    b+b = b
    2b=b
    2 = 1 ***

    Can anyone find the flaw? :p
    And an added challenge, who can prove 1 + 1 = 2? I haven't done it myself, but I hear its hard.
     
    orange_ranger, Mar 7, 2007 IP
  2. klown

    klown Peon

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    #2
    (a+b)(a-b) = b(a-b) is flaw..

    wait.. im stupid they're still both 0...

    The flaw i guess is that after you get to (a+b)(a-b) = b(a-b) your looking at 0 on both sides so everything after that just breaks down to 0=0. 2*0=0 is correct however 2 zeros is still not 2..
     
    klown, Mar 7, 2007 IP
  3. -Abhishek-

    -Abhishek- Regaining my Momentum!

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    #3
    Easy ... We have made it clear in the first part itself that

    a = b ....
    therefore, a - b = 0

    So in the above equation when you divide both sides by a-b, you are actually dividing both sides by 0, which is not possible!

    Hence, the above equation is wrong :)

    Just a modified part ....

    a^2 - a^2 = b^2 - b^2
    a^2 - b^2 = ab - b^2
    (a+b)(a-b) = b(a-b)
    Divide both sides by (a-b),
    but a-b = 0

    Therefor the equation is not possible! :)
     
    -Abhishek-, Mar 7, 2007 IP
  4. klown

    klown Peon

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    #4
    Why is it impossible to divide a number by zero? I thought that a number divided by zero equals zero.
     
    klown, Mar 7, 2007 IP
  5. mann3r

    mann3r Peon

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    #5
    it is simply saying that division by 0 is not allowed or infinite.
     
    mann3r, Mar 7, 2007 IP
  6. -Abhishek-

    -Abhishek- Regaining my Momentum!

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    #6
    Well zero divided by one can be 0 .... but anything divided by 0 cannot be 0 ....

    Let me explain ....
    0/1 = 0 ...
    so taking the one on the other side means ...
    0 = 0 x 1
    hence, 0 = 0 .... we got it...

    Now let's take the other way round .....

    1/0 = 0 ...

    let's take the 0 on the other side ....

    1 = 0 x 0 ...

    Do you think the above equation is right ? ... Not me I guess :)
    There is no number which would fit both situations. So there is no answer.
    So we call it an "undefined" equation because we have no answer for it. :)

    Hope I cleared it!
     
    -Abhishek-, Mar 7, 2007 IP
  7. swapnil90

    swapnil90 Well-Known Member

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    #7
    Proving 1 + 1 = 2 is not difficult

    Take 1 pen, take another pen....Now you've got 2 pens...lol....
     
    swapnil90, Mar 7, 2007 IP
  8. mubin

    mubin Notable Member

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    #8
    heh, all the indians and pakistanis love this math stuff.

    I am so bad at math its not even funny.
     
    mubin, Mar 7, 2007 IP
  9. orange_ranger

    orange_ranger Guest

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    #9
    lol. yay, ding ding ding.
    Yes, it is undefined when dividing by zero, thus the proof is wrong.

    It's apparently much harder than that, haha.
    I just googled it and got this:
    http://mathforum.org/library/drmath/view/51551.html

    EDIT: After searching some more, I found this:
    http://www.idt.mdh.se/~icc/1+1=2.htm
    LOL!! Totally...lost.
     
    orange_ranger, Mar 7, 2007 IP
  10. checksum

    checksum Notable Member

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    #10
    1 = 2?

    I think you've lost some of your marbles. :confused:
     
    checksum, Mar 8, 2007 IP
  11. Shadow056

    Shadow056 Peon

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    #11
    proof that 1+1 = 2 is easy

    left one finger !,,, <<< like this

    now lift one other finger !!,, <<<< like this

    now count them

    XD

    you should get 2
     
    Shadow056, Mar 8, 2007 IP
  12. sanderson

    sanderson Peon

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    #12
    sanderson, Mar 8, 2007 IP
  13. 8everything

    8everything Peon

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    #13
    It's been explained :p

    That's mind boogling (;) lol), I think you tried explaining that to me before and I lost you 1/4 way :p E does not equal MC squared either! The things you learn in university..
     
    8everything, Mar 8, 2007 IP
  14. d16man

    d16man Well-Known Member

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    #14
    sin x / n
    cross out the n's and you get six :)
     
    d16man, Mar 8, 2007 IP
  15. 8everything

    8everything Peon

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    #15
    haha, that's a good one. That's the type of math I do ;) I'm not very good with calculus lol.
     
    8everything, Mar 8, 2007 IP