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The smallest positive integer r for which (1+ i/1-i)^n = 1, is

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The smallest positive integer r for which (1+ i/1-i)n = 1, is 

(a) 8 

(b) 16 

(c) 12 

(d) None of these

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1 Answer

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Best answer

The correct option (d) None of these

Explanation:

The smallest positive integer rl tbr which in= 1 is 4.

∴ n = 4 

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