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Is it true that $0.999999999\ldots = 1$? math fallacy problem: $-1= (-1)^3 = (-1)^{6/2} = \sqrt{(-1)^6}= 1$? Why $\sqrt{-1 \times -1} \neq \sqrt{-1}^2$? have many similar answers. When is this sanctioned?

Because I like figures, I wrote https://math.stackexchange.com/a/676192/85079 by dint of another answer. I referred to it. I think this similar but not identical answer can aid other people. But a moderator deleted it. The changes can aid other people, ergo can we have both? Thanks to all.

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It's fine (and perhaps unavoidable) that $2$ users submit structurally similar answers by happenstance. But this does not imply that copy-pasting someone else's answer and changing a few symbols should be tolerated.

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    $\begingroup$ cdn.avsforum.com/0/04/04be3904_18462291.jpeg $\endgroup$ – Asaf Karagila Mar 7 '14 at 22:05
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    $\begingroup$ @Asaf: Demystify wherefore this vatic effigy emanates feyly. $\endgroup$ – user642796 Mar 8 '14 at 7:49
  • $\begingroup$ Are you going to start using colors now, too? :-) $\endgroup$ – Asaf Karagila Mar 8 '14 at 8:01
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    $\begingroup$ @Asaf: $\textbf{colo}\color{red}{\textbf{u}}\textbf{rs}$. $\endgroup$ – user642796 Mar 8 '14 at 8:04
  • $\begingroup$ I know that Canadian are educated folks who understand the metric system. But I didn't know that they go to the theatre and like to sit at the centre while their favourite movie plays. $\endgroup$ – Asaf Karagila Mar 8 '14 at 8:08
  • $\begingroup$ The irony on this post is too high. :p No offence. This is just amusing. $\endgroup$ – Guy Mar 10 '14 at 19:27
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It is fine and unavoidable that wo people give structurally similar answers by accident. But that doesn't mean that copy-pasting someone elses answer and changing a few sysmbols is acceptable behavior.

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