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![[Post New]](/templates/default/images/icon_minipost_new.gif) 10 Mar 2008 20:23:00 IST
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I=int (0 to inf) (lnt/t^2+t+1)dt
replace t by 1/t we get int(inf to 0) (-lnt *-1/t^2)dt/(1/t^2 + 1/t +1)
which is int(inf to 0)(lnt /t^2+t+1)
= -I so I=0
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