Types of Matrices.Rows ,Columns Matrix.... | Class_2 | YouTube Video Link : https://www.youtube.com/watch?v=ixvHw3agcsk

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Type of Matrices:
 Row Matrix: A Matrix consisting of a single row is called row matrix
Example: [ 1, 2, 3 ], [ 4, 5 ]
 Column Matrix: A Matrix consisting of a single column is called column
matrix.
Example:
1
2
3
,
5
6
 Null/Zero/Void Matrix: A Matrix whose all elements are zero is called
zero/null/void matrix.
Example:
0 0
0 0
,
0 0 0
0 0 0
0 0 0
 Rectangular Matrix: A Matrix whose rows and columns are not equal is
called Rectangular Matrix.
Example:
1 2 3
4 5 6
,
1 2
3 4
5 6
2×3 , 3×2

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 Square Matrix: A Matrix with the same number of row and same number
of column is called square matrix.
Example:
1 2
3 4
,
1 2 3
4 5 6
7 8 9
 (a) Diagonal Matrix: A Square matrix whose all non-principal elements are
zero except principal diagonal is called diagonal matrix.
Example:
1 0 0
0 5 0
0 0 9
Note:
1 2 3
4 5 6
7 8 9
1 0 0
0 5 0
0 0 9
Figure: Principal Diagonal Matrix
 Scalar Matrix: A Square matrix whose all principal elements are same called
Scalar matrix:
Example:
3 0 0
0 3 0
0 0 3
,
2 0
0 2

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 Identity of Unit Matrix: A Square diagonal matrix whose all elements
principal elements are equal to 1 is called identity or unit matrix
Example:
1 0 0
0 1 0
0 0 1
,
1 0
0 1
 Sub Matrix: A matrix obtained by deleting some of the rows or columns of
a matrix is said to be a sub matrix.
Example:
1 2 3
4 5 6
7 8 9
=
5 6
8 9