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From: "ttattl ttattl" <trantuananh2006@gmail.com>
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Subject: help me ! double integral
Date: Sun, 8 May 2011 02:57:05 +0000 (UTC)
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I have problem how to discrete ( approximate ):

I = int(0,tn) int(0,s) f(u)duds

With tn is array o [0->1] . I divided into 1000 point