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:label: la_se
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\begin{aligned}
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-
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- y_1 = a_{11} x_1 + a_{12} x_2 + \cdots + a_{1k} x_k \\
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+ y_1 = a_{11} x_1 + a_{12} x_2 + \cdots + a_{1k} x_k \\
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\vdots \\
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y_n = a_{n1} x_1 + a_{n2} x_2 + \cdots + a_{nk} x_k
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\end{aligned}
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\gamma A =
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\gamma
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\begin{bmatrix}
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a_{11} & \cdots & a_{1k} \\
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\vdots & \vdots & \vdots \\
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a_{n1} & \cdots & a_{nk}
@@ -546,7 +544,6 @@ A x =
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a_{11} & \cdots & a_{1k} \\
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\vdots & \vdots & \vdots \\
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a_{n1} & \cdots & a_{nk}
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-
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\end{bmatrix}
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\begin{bmatrix}
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x_{1} \\
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当然,如果 $B$ 是方阵且可逆,我们可以将广义特征值问题转化为普通特征值问题 $B^{-1} A v = \lambda v$,但情况并非总是如此。
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- ## 进阶主题
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+ ## 进阶概念
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- 我们通过简要介绍几个其他重要主题来结束讨论 。
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+ 我们通过简要介绍几个其他重要概念来结束讨论 。
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### 级数展开
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