| 释义 |
matrix An array of elements laid out in rows and columns. The elements may be numbers, algebraic expressions, or a mixture of these. An m * n matrix has m rows (running from left to right) and n columns (running from top to bottom). In a matrix A, aij represents the element in the ith row and the jth column. Matrices are a convenient compact way of expressing systems of linear relations, for example the coefficients of an input-output system. |