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Omg spot the error (yes I do know what it is)

Name: Anonymous 2006-09-16 8:29

1/(-1)=(-1)/1
sqrt(1/(-1))=sqrt((-1)/1)
1/i=i/1
1=-1

OMG!!!

Name: Anonymous 2006-09-16 16:10 (sage)

>>10
if x^2=1, then x=1 or x=-1, but sqrt is defined to output only a single value.

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