## College Algebra (6th Edition)

a. $3\times 4$ b. $a_{32} =0$ $a_{23}$= $\pi$
A matrix of order $m\times n$ has $m$ rows and $n$ columns. $a_{ij}$ is the element of the matrix in row i, column j. --------------- a. the matrix has m = $3$ rows and n = $4$ columns, so its order is $3\times 4$ b. $a_{32}$= the element in row 3, column 2,$=0$ $a_{23}$= the element in row 2, column 3 = $\pi$ a. $3\times 4$ b. $a_{32} =0$ $a_{23}$= $\pi$