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Originally Posted by daking
Agreed.
In the context of this thread the notation of 1/infinity is definitely inappropriate as we get proofs such as this :
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Look at it this way:
1/infinity = 0
.9r = 1 - 1/infinity
.9r = 1 - 0
.9r = 1
There is no need for any approximation anywhere, since 1/infinity exactly equals 0.
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Doesn't 1/infinity equal 0? Certainly the limit of 1/x as x approaches infinity is 0. If you were to slap limit notation before the above proof it would make more sense. I agree though, that as a proof, it ain't exactly proper.