CBSE Class 12-science Answered
i.i=1
Asked by | 19 Sep, 2008, 08:59: PM
Expert Answer
you can not write 
-1 * -1 = (-1)(-1) = 1 =1
because square root of negative numbers is not defined.
thats -1 = i which is a imaginary no.
Answered by | 19 Sep, 2008, 10:49: PM
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