A matrix has an order 3×3 it is known as
Singular Matrix
Square Matrix
Rectangular matrix
Involutary Matrix
Answers
Step-by-step explanation:
Rectangular Matrix
A rectangular matrix is formed by a different number of rows and columns, and its dimension is noted as m \times n. Basically, almost all matrices are rectangular matrix but if the rows and columns become the same then it won't be a rectangular matrix.
\begin{pmatrix} 1 & 2 & 5 \\ 9 & 1 & 3 \end{pmatrix}
Square Matrix
When the rows and columns are equal then it won't be a rectangular matrix instead it will be a square matrix. The reason is simple, a square has all equal sides and when the number of rows and columns are equal that means all sides of a matrix are equal hence that is why we call it a square matrix. In short, a square matrix is formed by the same number of rows and columns. The elements of the form { a }_{ ii } constitute the principal diagonal. The secondary diagonal is formed by the elements with i + j = n + 1.