[線代] 簡單幾題矩陣
1.
[ 0 0 i]
K=[-i 0 0]
[ 0 -1 0]
K^n=I(I為單位矩陣)
n=?
除了硬算之外有沒有比較快的方式呢?
2.
證明
[Mi,Mj]=i(εijk)Mk
[Mi,Mj]=MiMj-MjMi
對於矩陣的證明完全不知道怎麼下手
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