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## Main Question or Discussion Point

i was taught that i

because ((-1)

but isnt it mathematically correct to say

[tex]\sqrt{-1}[/tex] * [tex]\sqrt{-1}[/tex] = [tex]\sqrt{-1*-1}[/tex] = [tex]\sqrt{1}[/tex] = 1

what the heck!!

Is there some bleedingly obvious thing im missing.

^{2}= -1because ((-1)

^{1/2})^{2}=(-1)^{2/2}=(-1)^{1}=-1but isnt it mathematically correct to say

[tex]\sqrt{-1}[/tex] * [tex]\sqrt{-1}[/tex] = [tex]\sqrt{-1*-1}[/tex] = [tex]\sqrt{1}[/tex] = 1

what the heck!!

Is there some bleedingly obvious thing im missing.