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2DWorlds Forums › 2DWorlds › 2DWorlds Discussion v
''does 0.999 = 1?''

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''does 0.999 = 1?''
Ming-Yan Offline
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06-24-2011, 05:05 PM (This post was last modified: 06-24-2011, 05:06 PM by 18cwatford.)
That is COMPLETELY INCORRECT.

It doesn't work because 9.999... is not rational and therefore when multiplied is rounded.
You can tell the rounding error by plugging it back in.

10(1) =/= 9.999...
why? because 10 does not equal 9.999...

Didn't teachers tell kids to check their answers by plugging it back in?
Also this would appear as invalid in a calculator because a variable cannot have 2 numbers unless they are the same.
You cannot have X as .999 and as 1, they are different numbers. [unless it is a quadratic which it is not]

Which leads to another point, don't trust wikipedia.
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''does 0.999 = 1?'' - by Eric - 06-24-2011, 07:55 AM

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