Error: 1�t�t2=1 1�t�t2�1=xn0fntn�12 Firstformula.the Rstformulaisobtainedexpandingseries(2)inthefollowingway:w(x;y)=1 Xy X2y2 (1�x)(1�y)1 1�x2y2 (1�x)(1�y)=(1 Xy X2y2)xk0x2k (1�x)k 1y2k (1�y)k 1=xk0xk�bk= - PowerPoint Presentations and PDF Documents