How do you determine if the series the converges conditionally, absolutely or diverges given Sigma (cos(npi))/(n+1) from [1,oo)?
1 Answer
Apr 1, 2017
Explanation:
Since
Let us see if it is absolutely convergent.
which is a harmonic series (divergent). So, it is NOT absolutely convergent.
Let us see if it is conditionally convergent.
Since
Hence, the series is conditionally convergent.