Types Of Matrices

A matrix may be classified by types. It is possible for a matrix to belong to more than one type.

• A row matrix is a matrix with only one row. 

E is a row matrix of order 1 × 1


B is a row matrix of order 1 × 3

• A column matrix is a matrix with only one column. 

C is a column matrix of order 1 × 1


D is a column matrix of order 2 × 1


A column matrix of order 2 ×1 is also called a vector matrix.

• A zero matrix or a null matrix is a matrix that has all its elements zero. 

O is a zero matrix of order 2 × 3

• A square matrix is a matrix with an equal number of rows and columns. 

T is a square matrix of order 2 × 2


V is a square matrix of order 3 × 3

• A diagonal matrix is a square matrix that has all its elements zero except for those in the diagonal from top left to bottom right; which is known as the leading diagonal of the matrix. 

B is a diagonal matrix

• A unit matrix is a diagonal matrix whose elements in the diagonal are all ones.

P is a unit matrix.