augmented matrix
Technical term in linear algebra and computing; a matrix formed by appending the columns of two given matrices, usually for solving systems of linear equations.
To solve the system of equations, we form an augmented matrix by arranging the coefficient matrix and the constant terms.
係数行列 is the coefficient matrix alone, while 拡大行列 includes the constant terms appended as an extra column.
Compound of 拡大 (expansion) and 行列 (matrix), directly translating the English mathematical term 'augmented matrix'.