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Simplifying conditions for invertibility http://www.khanacademy.org/video/linear-algebra--simplifying-conditions-for-invertibility ---------------------------------------- يتناول هذا الفيديو طريقة تبسيط الشروط لقابلية التحول ------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org