What is a Matrix?

 Before discussing the types of matrix, let's discuss what a matrix is.

• A matrix is a rectangular array of numbers or symbols which are generally arranged in rows and columns.

• The order of the matrix is defined as the number of rows and columns.

• The entries are the numbers in the matrix and each number is known as an element.

• The plural of matrix is matrices.

• The size of a matrix is referred to as ' n by m′${\mathrm{\prime }}^{}$ matrix and is written as m×n, where n is the number of rows and m$m$ is the number of columns.

• Matrix example, we have a 3×2 matrix, that's because the number of rows here is equal to 3 and the number of columns is equal to 2.
  

[255267] known as a 2×3 matrix.