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The conjugate of the complex number $\;\large\frac{1-i}{1+i}\;$ is


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Answer : i
Explanation :
$ \large\frac{1-i}{1+i} = \large\frac{1-i}{1+i} \times \large\frac{1-i}{1-i}$
$= \large\frac{(1-i)^{2}}{1^{2}-i^{2}}$
$= \large\frac{1^{2}+i^{2} - 2i}{1+1}$
$= \large\frac{1-1-2i}{2}$
$= -i$
Hence , conjugate of $\;\large\frac{1-i}{1+i}\;$ is i .
answered Apr 17, 2014 by yamini.v

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