Lets Settle this Mathematically

November 21st, 2008 by Len

If x=0.9999…

10x = 9.9999…
10x – x = 9.9999… – 0.9999…
9x = 9
x=1

Therefore 0.9999… = 1

And the universe implodes.

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3 Responses to “Lets Settle this Mathematically”

  1. Adam says:

    again – stop looking at my fucking maths coursework….there’s three other proofs i can show you that PROVE that 0.9r=1

    Firstly, can you think of a number that lies between 0.9r and 1? no…?

  2. rat_attack says:

    ^^^

    What about 1 divided by 1.1r? Would that just be plain old 0.9?

    My maths skills are severely limited, btw. I’m not bad with Venn diagrams, though, provided there are only two circles.

  3. Jake says:

    Granted i like this, very smart, and true, but isnt that down to the error of x10 so the decimal point is “moved” one place, to cause the slight difference and rounding :P
    im studying maths at A level at the moment, just thought i’d give my view lol

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