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The sum of the series a(0) +a(4) +a(8)+...

The sum of the series ` a_(0) +a_(4) +a_(8)+a_(12)+ ……` is

A

`2^(n)cos""(npi)/4`

B

`2^(n-1)cos""(npi)/4`

C

`2^(n-1)cos""(npi)/4`

D

`2^(n/2)cos""(npi)/4`

Text Solution

Verified by Experts

The correct Answer is:
D
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