Question Number 103177 by mohammad17 last updated on 13/Jul/20

Find the gineral form of the sequence ⟨2,−2,2,−2,.....⟩?

Answered by Dwaipayan Shikari last updated on 13/Jul/20

2Σ_(n=1) ^∞ (−1)^(n+1)

Commented bymohammad17 last updated on 13/Jul/20

thank you sir