7 ____ \ ` \ cos(2*n) \ -------- / n / 2 /___, n = 1
Sum(cos(2*n)/2^n, (n, 1, 7))
cos(2) cos(4) cos(6) cos(8) cos(10) cos(12) cos(14) ------ + ------ + ------ + ------ + ------- + ------- + ------- 2 4 8 16 32 64 128
cos(2)/2 + cos(4)/4 + cos(6)/8 + cos(8)/16 + cos(10)/32 + cos(12)/64 + cos(14)/128
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