Please go through the slides. It is very interesting way to learn this chapter for 2020-21.If you like this PPT please put a thanks message in my number 9826371828.

2. 1. existence of non-zero matrices whose
product is the zero matrix.
2. Concept of elementary row and column
operations.
3. Proof of the uniqueness of inverse, if it
exists.

5. A matrix having m rows and n columns is called a
matrix of order m × n or simply m × n
matrix (read as an m by n matrix).

7. a11
a13
a22

12. Equality of matrices

18. I2
I3

19. 1)Addition of matrices
2)Differences of matrices

20. 3)Multiplication of a matrix by a scalar

26. The product of two matrices A and B is defined if the
number of columns of A is equal to the number of
rows of B. Let A = [aij] be an m × n matrix and B = [bjk]
be an n × p matrix. Then the product of the matrices A
and B is the matrix C of order m × p.