Matrix (mathematics) 矩阵

（重定向自Matrix theory）

Each element of a matrix is often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A.

Schematic depiction of the matrix product AB of two matrices A and B.

The vectors represented by a 2-by-2 matrix correspond to the sides of a unit square transformed into a parallelogram.

In mathematics, a matrix (plural matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns. The dimensions of matrix (1) are 2 × 3 (read "two by three"), because there are two rows and three columns.

$\begin{bmatrix}1 & 9 & -13 \\20 & 5 & -6 \end{bmatrix}$

单词	Matrix theory
释义	Matrix theory 英语例句库 Their properties were characterized by using integral transformation and matrix theory.Two biorthogonality formulae for the multiple vector-valued multivariate wavelet packets were obtained. 运用积分变换与矩阵理论，刻划它们的性质，得到两个双正交公式。英语百科 Matrix (mathematics) 矩阵（重定向自Matrix theory） In mathematics, a matrix (plural matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns. The dimensions of matrix (1) are 2 × 3 (read "two by three"), because there are two rows and three columns. $\begin{bmatrix}1 & 9 & -13 \\20 & 5 & -6 \end{bmatrix}$
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