[理工] [線代]98台大資工
看板Grad-ProbAsk作者s0071988js (放肆 無禮 大膽！！！！)時間15年前 (2010/11/13 01:51)推噓8(8推 0噓 8→)留言16則, 7人參與討論串1/2 (看更多)
98台大資工線代第三題
題目:http://ppt.cc/8ph3
小弟的寫法是
1.先求出eigen value
2.再求出eigen vector
3.再利用對角化,求出可逆矩陣P使得A=PDP^-1,D:對角矩陣
4.再把該矩陣的100次方=P(D^100)P^-1
可是小弟在第一步就算到P(A)=λ^2-tr(A)λ+Det(A)=λ^2-2*cos(π/100)λ+1
就不會分解這個特徵方程式了,請問板上會解此題的大大可以指點一下這題嗎
感激不盡
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◆ From: 114.25.178.85
※ 編輯: s0071988js 來自: 114.25.178.85 (11/13 01:57)
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12/15 00:27,
7年前
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12/15 00:27, 16F
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