Matrices

# Matrix

A **matrix of m rows and n columns** (mxn) is an ordered table of numbers with the form:

2nd column ↑ ↑m^{th} row

Example:

If the matrix has the same number of rows and columns, it is called **square matrix**.

If the matrix has only a row, it is called** row vector or row matrix**. If it has only a column, it is called **column vector or column matrix**.

One matrix equals another matrix if they have the same dimension and the same terms

A matrix is called **triangular** if

Examples

A matrix is called **diagonal** if

Example:

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