討論串[理工] [工數]-矩陣
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Y' = AY + B , A = [ 3 1 ] B = [ - sin3t ]. [ 7 -3 ] [ -16sin3t + 9cos3t ]. from |A - λI| = 0. λ = 4, -4. when λ = 4, (A - λI)X1 = 0. [ -1 1 ][x1] = 0
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{ 7.3 0.2 a. A = -11.5 1.0 b. 17.7 1.8 c }. e1={ -1 3 -1 },e2={ 1 -1 3 } 題目有給. eigen value λ1 λ2 λ3 滿足. Ae = λe e 特徵向量. 也就是說 : (A-λI)e = 0. e = 0向量 沒有
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