10 ____ \ ` \ cos(2*n) \ -------- / 2 / n! /___, n = 1
Sum(cos(2*n)/factorial(n)^2, (n, 1, 10))
cos(4) cos(6) cos(8) cos(10) cos(12) cos(14) cos(16) cos(18) cos(20) ------ + ------ + ------ + ------- + ------- + -------- + ---------- + ------------ + -------------- + cos(2) 4 36 576 14400 518400 25401600 1625702400 131681894400 13168189440000
cos(4)/4 + cos(6)/36 + cos(8)/576 + cos(10)/14400 + cos(12)/518400 + cos(14)/25401600 + cos(16)/1625702400 + cos(18)/131681894400 + cos(20)/13168189440000 + cos(2)
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