$\sum_{n=2}^{30}\left(-\frac{1}{i}\right)^{n}=\space?$

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$\sum_{n=2}^{30}\left(-\frac{1}{i}\right)^{n}=\space?$

E

Editor

Sep 18, 2022

\sum_{n=2}^{30}\left(-\frac{1}{i}\right)^{n}=\space?

Difficulty: Easy

A:

1

B:

$-1$

C:

$i$

D:

$-i$

View Solution Steps

ID: 63273dbaca83163ac3a12c39