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Calculus: Derivatives 2.5 (new HD version) http://www.khanacademy.org/video/calculus--derivatives-2-5--new-hd-version ---------------------------------------------- يتناول هذا الفيديو حل امثلة حول المشتقة 2.5 ---------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org