Find the partial sum.
-Find the sum of the first ten terms of the sequence whose general term is $a _ { n } = ( - 1 ) ^ { n }$.
A) 1
B) $- 10$
C) $- 1$
D) 0

Question

Quizplus · Accepted Answer

The sequence alternates between 1 and -1 for each term, starting with $a_1 = -1$. For the first ten terms, there will be an equal number of positive and negative ones, resulting in their sum being 0.

Find the Partial Sum an=(−1)na _ { n } = ( - 1 ) ^ { n }an​=(−1)n

Find the Partial Sum $a _ { n } = ( - 1 ) ^ { n }$