Подстановка условия
[src](((-1)^(n + 2)*x^(2*n + 3))/((4*n)*n + 8*n + 5))/(((-1)^(n + 1)*x^(2*n + 1))/((4*n)*n + 1)) при x = -1/2
(((-1)^(n + 2)*x^(2*n + 3))/((4*n)*n + 8*n + 5))/(((-1)^(n + 1)*x^(2*n + 1))/((4*n)*n + 1))
(−1)n+1x2n+1n4n+11(−1)n+2x2n+3n4n+8n+51 (((-1)^(n + 2)*(-1/2)^(2*n + 3))/((4*n)*n + 8*n + 5))/(((-1)^(n + 1)*(-1/2)^(2*n + 1))/((4*n)*n + 1))
(−1)n+1(−1/2)2n+1n4n+11(−1)n+2(−1/2)2n+3n4n+8n+51 (((-1)^(n + 2)*(-1/2)^(2*n + 3))/((4*n)*n + 8*n + 5))/(((-1)^(n + 1)*(-1/2)^(2*n + 1))/((4*n)*n + 1))
(−1)n+1(−21)2n+1n4n+11(−1)n+2(−21)2n+3n4n+8n+51 (-1)^(-1 - n)*(-1)^(2 + n)*(-1/2)^(-1 - 2*n)*(-1/2)^(3 + 2*n)*(1 + 4*n^2)/(5 + 4*n^2 + 8*n)
4n2+8n+5(−1)−n−1(−1)n+2(−21)−2n−1(−21)2n+3(4n2+1)