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The value of sum(n=1)^(13) (i^n+i^(n+1))...

The value of `sum_(n=1)^(13) (i^n+i^(n+1))`, where `i =sqrt(-1)` equals (A) `i` (B) `i-1` (C) `-i` (D) `0`

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CENGAGE ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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