A matrix is a group of numbers or elements which are arranged as a rectangular array. The matrix's rows and columns are usually indexed by letter. For a *n x m* matrix, n represents the number of rows and m represents the number of columns. If we have a hypothetical *n x m* matrix, it will be structured as follows:

If *n* *= m,* then it is* *called a square matrix:

A vector is actually a matrix with one row or one column with more than one element. It can also be defined as the *1-by-m* or *n-by-1* matrix. You can interpret ...