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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Mar 2008 19:06:11 IST
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dx/(x+1)=dt
integrating
[ 0] [ 99] dx/(x+1) =[ 0][ t] dt
ln(x+1)|099=t-0
ln(100)-ln(1)=t
ln(100)=t
ln (x+1)=t
x=99
t=ln 100 seconds
edit
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