Question

value of (1+i
)^n+(1-i)^n is ____if n is positive integer​

Answer 1

Step-by-step explanation:

This is required solution to the question. Hope you understand it was.

Answer 2

Answer:

k=2

Step-by-step explanation:

(1−i)  n (1−  i 1 )  n =(1−i)  n  (1+(i)  2  ⋅  i 1 ​   )  n  =(1−i)  n  (1+i)  n  ={(1−i)(1+i)  n  }=(1−i  2  )  n  =2  n

Comparing with k  n

We get k=2