In mathematics, a matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns. Matrices are used in various areas of mathematics and other fields such as physics, computer science, and engineering, to represent and solve systems of linear equations, transformations, and other mathematical concepts. Matrices are typically denoted by uppercase bold letters, such as A, and individual elements within a matrix are denoted by subscripts, such as A[i, j].
