Mohan posted an Question
April 15, 2020 • 01:01 am 30 points
  • IIT JAM
  • Mathematics (MA)

Explain 3rd and 4th step

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    Ujjawal vishal best-answer

    in 3rd step they expanded the series with putting n=0,1,2....and in 4th they applied formula for sum of GP of n terms

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