Clarification: 1. Bidhan dude, the initial question of mine was to find Integration. Kosle "differentition lai integration.." vanera lyayo? Kya bekaar ko kuro garcha! Jaam gucchaa khelna- you and me. 2. Yeah, hyper dude, thanks. Afterall, I did online search, didn't I? Oh, is sajha forum not considered "online" then? (By the way, I did do many online searches/research before resorting to sajha) And I do owe you a candy.