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The dot product http://www.khanacademy.org/video/the-dot-product --------------------------------------------- يتناول هذا الفيديو توضيحاً لمفهوم الضرب القياسي --------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org