A 4 9:YV Equating coefficients of a" to zero in the following series: Σ. an + 1)a,a" + +na,zn+2 = 0 n! n=0 yields: an (n² + 1)an + + nan n! %3D الخيار 2 an-1 (n² + 1)a, + +(n - 2)an-2 = 0 (n – 1)! O 1...

None
"/>
Extracted text: A 4 9:YV Equating coefficients of a" to zero in the following series: Σ. an + 1)a,a" + +na,zn+2 = 0 n! n=0 yields: an (n² + 1)an + + nan n! %3D الخيار 2 an-1 (n² + 1)a, + +(n - 2)an-2 = 0 (n – 1)! O 1 LJI an (n² + 1)an-1+ n! + nan-2 = 0 II <>