行列(matrix)
matrix環境
コマンド | 出力 |
\begin{matrix} a & b \\ c & d \end{matrix} |
acbd |
\begin{pmatrix} a & b \\ c & d \end{pmatrix} |
(acbd) |
\begin{bmatrix} a & b \\ c & d \end{bmatrix} |
[acbd] |
\begin{Bmatrix} a & b \\ c & d \end{Bmatrix} |
{acbd} |
\begin{vmatrix} a & b \\ c & d \end{vmatrix} |
∣∣∣acbd∣∣∣ |
\begin{Vmatrix} a & b \\ c & d \end{Vmatrix} |
∥∥∥acbd∥∥∥ |
\begin{pmatrix} a & b & c\\ d & e & f \end{pmatrix} |
(adbecf) |
array環境
コマンド | 出力 |
\( \left( \begin{array}{ccc} a & b & c \\ d & e & f \\ g & h & i \end{array} \right) \) |
⎛⎝⎜adgbehcfi⎞⎠⎟ |
\( \left[ \begin{array}{rrr} 1 & 10 & 100 \\ 10 & 100 & 1 \\ 100 & 1 & 10 \end{array} \right] \) |
⎡⎣⎢110100101001100110⎤⎦⎥ |
\( \left( \begin{array}{crl} 1 & 10 & 100 \\ 10 & 100 & 1 \\ 100 & 1 & 10 \end{array} \right) \) |
⎛⎝⎜110100101001100110⎞⎠⎟ |
行列のサンプル
\( A = a_{ij} = \left( \begin{array}{cccc} a_{11} & a_{12} & \ldots & a_{1n} \\ a_{21} & a_{22} & \ldots & a_{2n} \\ \vdots & \vdots & \ddots & \vdots \\ a_{m1} & a_{m2} & \ldots & a_{mn} \end{array} \right) \) |
A=aij=⎛⎝⎜⎜⎜⎜⎜a11a21⋮am1a12a22⋮am2……⋱…a1na2n⋮amn⎞⎠⎟⎟⎟⎟⎟ |
\( \left( \begin{array}{c|cc} a & b & c \\ \hline d & e & f \\ g & h & i \end{array} \right) \) |
⎛⎝⎜⎜adgbehcfi⎞⎠⎟⎟ |
\( \begin{pmatrix} \lambda_1 & & & & \\ & \lambda_2 & & \Huge{0} & \\ & & \ddots & & \\ & \Huge{0} & & \lambda_{n-1} & \\ & & & & \lambda_n \end{pmatrix} \) |
⎛⎝⎜⎜⎜⎜⎜⎜⎜⎜⎜⎜λ1λ20⋱0λn−1λn⎞⎠⎟⎟⎟⎟⎟⎟⎟⎟⎟⎟ |
転置行列(transposed matrix)
コマンド | 出力 |
\( \left(\begin{array}{ccc} a & b & c\\ d & e & f \end{array}\right)^{\mathrm{T}} =\left(\begin{array}{cc} a & d \\ b & e \\ c & f \end{array}\right) \) |
(adbecf)T=⎛⎝⎜abcdef⎞⎠⎟ |
対角和(trace)
\( \mathrm{tr} A \) |
trA |
\( \mathrm{tr} \begin{pmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \end{pmatrix} = a_{11} + a_{22} + a_{33} \) |
tr⎛⎝⎜a11a21a31a12a22a32a13a23a33⎞⎠⎟=a11+a22+a33 |
行列式(determinant)
\( \mathrm{det} \) |
det |
\( \mathrm{det} A = \begin{vmatrix} a & b \\ c & d \end{vmatrix} = ad - bc \) |
detA=∣∣∣acbd∣∣∣=ad–bc |
階数(rank)
\( \mathrm{rank} A \) |
rankA |
次元(dimension)
\( \dim A \) |
dimA |