7 _____ \ ` \ /2*n\ \ cos|---| \ \ 10/ / -------- / 2 / 4*n - 1 /____, n = 1
Sum(cos((2*n)/10)/(4*n^2 - 1), (n, 1, 7))
cos(1/5) cos(2/5) cos(3/5) cos(4/5) cos(1) cos(6/5) cos(7/5) -------- + -------- + -------- + -------- + ------ + -------- + -------- 3 15 35 63 99 143 195
cos(1/5)/3 + cos(2/5)/15 + cos(3/5)/35 + cos(4/5)/63 + cos(1)/99 + cos(6/5)/143 + cos(7/5)/195
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