有個問題一直想了很久都想不出來,
所以想請問各位強者一個線代的相關問題:
1.
R是2*2旋轉矩陣,給定某一A矩陣,
是否必定存在一個矩陣B,
使得R^T A R = B A?
可以證明嗎?
是否唯一?
2.
又如果B存在,
能否僅以R和A的element來表達B的element?
3.
如果R推廣成Q
如果必存在一C使得
Q^(-1) A Q = CA
則滿足這種關係式的的Q是否有什麼特別的條件
不用窮舉,我只想知道有哪些情況的Q能夠滿足這種關係式
感謝各位強者的解答
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