[線代] 兩小題特殊矩陣的性質
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1.If A is Hermitian(A=A), then A+iI is invertible.
2.If Q is orthogonal, then Q+0.5I is invertible.
做很久證明不了也舉不出反例
還請高手幫忙 謝謝
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12/16 23:33, , 1F
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