# Precalculus Examples

A matrix is a rectangular arrangement or array of elements. The dimensions of a matrix identify how many rows and columns a specific matrix has. represents the number of rows and represents the number of columns. Assuming that the matrix name is , the matrix dimensions would be written as .

is the number of rows. In this case, the number of rows is .

is the number of columns. In this case, the number of columns is .

The given matrix dimensions .