inverse of matrix

為了解 (9.7) ,我們需要一個類似 A 的"倒數"的運算元,我們定義 一個矩陣 A-1 ,稱為 A 的"反矩陣 (inverse matrix)",使得式子解如下﹔ ... 假若 A 有反矩陣,則 A 稱為"可逆的 (invertible)"或是"非奇異的 (nonsingular)";假若 A 沒有反 矩陣,則稱 A 為"奇異的 (singular) ...

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