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If n is a positive integer, then (1 + i...

If n is a positive integer, then `(1 + i)^n + (1-1)^n` is equal to

A

`sqrt(2)^(n-2) cos ( (npi)/(4) )`

B

`sqrt(2)^(n-2) sin ( (n pi)/(4) ) `

C

`sqrt(2)^(n+2) cos ( (npi)/(4) )`

D

`sqrt(2)^(n+2) sin ((npi)/(4) )`

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IPUCET PREVIOUS YEAR PAPERS-GGSIPU MATHEMATICS 2005-MCQ
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