Question
let tr = r/1+r2+ r4 then lim n-->∞ ∑ tr
Read 2 Solution.
tr = 1/2 (1/ (r2 -r +1 ) - 1/ (r2 +r +1) ) then putting r = 1 to n we observe that only first and last tern term remain others gets cancel
tr = 1/2( 1 - 1/ n2 +n +1 ) then solving....... wev get 1/2
VISHAL PHOGAT 11 year ago
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MANISH GUPTA 11 year ago
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