Question
The smallest positive integral value of $\mathrm{n}$ for which $\left(\frac{1-\mathrm{i}}{1+\mathrm{i}}\right)^{n}$ is purely imaginary with positive imaginary part is(a) 2(b) 3(c) 4(d) 5
Step 1
Step 1: We are given the expression $\left(\frac{1-\mathrm{i}}{1+\mathrm{i}}\right)^{n}$ and we need to find the smallest positive integer value of $n$ for which this expression is purely imaginary with a positive imaginary part. Show more…
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