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Matrix (20 Marks)
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1) Prove that any square matrix has no more than one inverse 2) Suppose A and B are matrices where A^-1, B^-1, and AB all exist. Show that (AB)^-1=B^-1 * A^-1
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As follows: 圖片參考:http://i707.photobucket.com/albums/ww74/stevieg90/01-43.gif
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