Category:Definitions/Companion Matrices
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This category contains definitions related to Companion Matrices.
Related results can be found in Category:Companion Matrices.
Let $P$ be the polynomial of degree $n$ presented in the form:
- $\map P x = x^n - a_{n - 1} x^{n - 1} - \cdots - a_1 x - a_0$
The companion matrix of $P$ is the square matrix of order $n$:
- $C = \begin {pmatrix} a_{n - 1} & a_{n - 2} & \cdots & a_2 & a_1 & a_0 \\
1 & 0 & \cdots & 0 & 0 & 0 \\ 0 & 1 & \cdots & 0 & 0 & 0 \\ \vdots & \vdots & \ddots & \vdots & \vdots & \vdots \\ 0 & 0 & \cdots & 1 & 0 & 0 \\ 0 & 0 & \cdots & 0 & 1 & 0 \\ \end {pmatrix}$
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