4 ____ \ ` \ n / n \ \ x *\y - y2*n/ / -------------- / y3*n - y2*n /___, n = 1
Sum((x^n*(y^n - y2*n))/(y3*n - y2*n), (n, 1, 4))
2 / 2 \ 3 / 3 \ 4 / 4 \ x*(y - y2) x *\y - 2*y2/ x *\y - 3*y2/ x *\y - 4*y2/ ---------- + -------------- + -------------- + -------------- y3 - y2 -2*y2 + 2*y3 -3*y2 + 3*y3 -4*y2 + 4*y3
x*(y - y2)/(y3 - y2) + x^2*(y^2 - 2*y2)/(-2*y2 + 2*y3) + x^3*(y^3 - 3*y2)/(-3*y2 + 3*y3) + x^4*(y^4 - 4*y2)/(-4*y2 + 4*y3)
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