80 ____ \ ` \ /pi*n\ \ cos|----| ) \100 / / --------- / 30 /___, n = 1
Sum(cos((pi*n)/100)/30, (n, 1, 80))
___________ ___________ ___________ / ___ / ___\ / ___ / ___ / ___\ / 5 \/ 5 /pi\ /pi\ / pi\ /2*pi\ /3*pi\ /3*pi\ /3*pi\ /4*pi\ /7*pi\ /7*pi\ /9*pi\ /9*pi\ /11*pi\ /13*pi\ /17*pi\ /19*pi\ ___ |1 \/ 5 | ___ / 5 \/ 5 ___ / 5 \/ 5 ___ |1 \/ 5 | / - + ----- cos|--| cos|--| cos|---| cos|----| cos|----| cos|----| cos|----| cos|----| cos|----| cos|----| cos|----| cos|----| cos|-----| cos|-----| cos|-----| cos|-----| \/ 2 *|- - -----| \/ 2 * / - - ----- \/ 2 * / - + ----- \/ 2 *|- + -----| \/ 8 8 \25/ \50/ \100/ \ 25 / \ 25 / \ 50 / \100 / \ 25 / \ 50 / \100 / \ 50 / \100 / \ 100 / \ 100 / \ 100 / \ 100 / \4 4 / \/ 8 8 \/ 8 8 \4 4 / ---------------- + ------- + ------- + -------- + --------- + --------- + --------- + --------- + --------- + --------- + --------- + --------- + --------- + ---------- + ---------- + ---------- + ---------- - ----------------- + ---------------------- + ---------------------- + ----------------- 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 60 60 60 60
sqrt(5/8 + sqrt(5)/8)/30 + cos(pi/25)/30 + cos(pi/50)/30 + cos(pi/100)/30 + cos(2*pi/25)/30 + cos(3*pi/25)/30 + cos(3*pi/50)/30 + cos(3*pi/100)/30 + cos(4*pi/25)/30 + cos(7*pi/50)/30 + cos(7*pi/100)/30 + cos(9*pi/50)/30 + cos(9*pi/100)/30 + cos(11*pi/100)/30 + cos(13*pi/100)/30 + cos(17*pi/100)/30 + cos(19*pi/100)/30 - sqrt(2)*(1/4 - sqrt(5)/4)/60 + sqrt(2)*sqrt(5/8 - sqrt(5)/8)/60 + sqrt(2)*sqrt(5/8 + sqrt(5)/8)/60 + sqrt(2)*(1/4 + sqrt(5)/4)/60
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