1.

If |a|<1,|b|<1 then the sum of the series 1+(1+a)b+(1+a+a2)b2+(1+a+a2+a3)b3+ ………… to infinite terms is

Answer»

If |a|<1,|b|<1 then the sum of the series 1+(1+a)b+(1+a+a2)b2+(1+a+a2+a3)b3+ ………… to infinite terms is



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