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Domain and Range of a Relation http://www.khanacademy.org/video/domain-and-range-of-a-relation ----------------------------------------------------------------------- يوضح هذا الفيديو مفهومي المجال والمدى للعلاقة ----------------------------------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org