A) 2
B) 3
C) 4
D) 5
Correct Answer: C
Solution :
\[{{(x-1)}^{2}}+1=0\Rightarrow x=1+i,1-i\] \[\therefore \]\[{{\left( \frac{\alpha }{\beta } \right)}^{n}}=1\Rightarrow {{(\pm i)}^{n}}=1\] \[\therefore \] n (least natural number) = 4You need to login to perform this action.
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