Monday, July 6, 2009

0.99999999................... = 1

Wanna see the proof? Check it out.... Let's assume, 
Let, x = 0.99999999999999.......................
=> 10x = 9.99999999999999.......................
=> 10x = 9 + 0.99999999999999...................
=> 10x = 9 + x
=>  9x = 9
=>   x = 1
So, 0.99999999999999............................ = 1
Is anything going wrong here?

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4 comments:

  1. Abhay K. SwamiJuly 20, 2013 at 5:36 PM

    0.99999999................... = 1
    Here u hv used "EQUAL TO" sign. But actually it is "ALMOST EQUAL TO".
    In your 4th line of proof you hv assumed "0.999..." almost equal to x.

    ReplyDelete
    Replies
    1. Zobayer HasanJuly 20, 2013 at 6:23 PM

      Welcome to my blog :) Very old post, nice catch.. :)

      Delete
    2. Shantanu RahmanAugust 18, 2016 at 11:51 PM

      I actually disagree :) I think the proof is legal and yes 0.9999.....(to infinity) does `equals` 1

      Delete
    3. Zobayer HasanAugust 23, 2016 at 7:11 PM

      Naah, it is still almost equal, not exactly equal.

      Delete

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