find element a23 of matrix A if A=

Question

2 -3 4
5 0 -6
7 2 -8

Answer 1

The matrix .

The genaral form of dimention of the matrix is that means the matrix has m rows and n columns.

The genaral form of element of the matrix is that means the element in the row, column.

The above matrix has 3 rows and 3 columns, so the dimension of matrix A is .

The element means that the element in the second row, third column, .