1.

If |x|<1,|y|<1 and x≠y, then the sum to infinity of the following series (x+y)+(x2+xy+y2)+(x3+x2y+xy2+y3)+......∞

Answer»

If |x|<1,|y|<1 and xy, then the sum to infinity of the following series (x+y)+(x2+xy+y2)+(x3+x2y+xy2+y3)+......



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