CBSE Class 11-science Answered
<div>Let x=1+a+a^2+.... and y=1+b+b^2+..... , where |a|<1 and |b|<1. Prove that </div>
<div>1+ab+a^2b^2+......=xy/(x+y-1)</div>
Asked by Vineeth K | 21 Mar, 2015, 08:23: PM

Answered by Vimala Ramamurthy | 24 Mar, 2015, 08:49: AM
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