Class 11Mathematics4-1.Complex numbers Integral power of iota, Algebraic operations and Equality of complex numbers
MediumIf $\left(\frac{1+i}{1-i}\right)^{x}=1$,then
- A$x=4n+1, n \in N$
- B$x=2n+1, n \in N$
- C$x=2n, n \in N$
- D$x=4n, n \in N$
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