Question

smallest natural no.i such that (1+i/1-i)^n=1 options 16 ,12,8,4​

Answer 1

Answer:

4

Step-by-step explanation:

1+i/1-i

by rationalising

(1+i)²/1-i×1+i

1+2i+i²/2

2i/2

i

i⁴=1