1.

If n is a positive integer, then(1+i)^n+(1-i)^n=

Answer»

`2^((n//2)+1).COS(npi)/(3)`
`2^((n//2)+1).cos(npi)/(4)`
`2^((n//2)+1).cos(npi)/(5)`
`2^((n//2)+1).cos(npi)/(6)`

ANSWER :B


Discussion

No Comment Found

Related InterviewSolutions