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Calculus: Derivatives 2 (new HD version) http://www.khanacademy.org/video/calculus--derivatives-2--new-hd-version -------------------------------------------- يتناول هذا الفيديو حساب المشتقة من خلال الميل ------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org