3 ___ \ ` \ 2 /n*n + 2\ ) log (|x + n|)*cos|-------| / \ 3 / /__, n = 1
Sum(log(|x + n|)^2*cos((n*n + 2)/3), (n, 1, 3))
2 2 2 log (|1 + x|)*cos(1) + log (|2 + x|)*cos(2) + log (|3 + x|)*cos(11/3)
log(|1 + x|)^2*cos(1) + log(|2 + x|)^2*cos(2) + log(|3 + x|)^2*cos(11/3)
x^n/n
(x-1)^n
1/2^(n!)
n^2/n!
x^n/n!
k!/(n!*(n+k)!)
csc(n)^2/n^3
1/n^2
1/n^4
1/n^6
1/n
(-1)^n
(-1)^(n + 1)/n
(n + 2)*(-1)^(n - 1)
(3*n - 1)/(-5)^n
(-1)^(n - 1)*n/(6*n - 5)
(-1)^(n + 1)/n*x^n
(3*n - 1)/(-5)^n