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Calculus: Derivatives 2 http://www.khanacademy.org/video/calculus--derivatives-2 --------------------------------------- يتناول هذا الفيديو امثلة حول المشتقات --------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org