Answer:
a.A+B can not find out
b.=
=
=
In similar way multiply two matrix of order
c.No,because A is not a square matrix and determinant of B is zero.
Step-by-step explanation:
We are given that two matrix
A=
B=
In matrix A , two rows and 3 columns therefore, the order of matrix
In matrix B, 3 rows and 3 columns therefore, the order of matrix B is
a.A+B can no find because when add two matrix then the order of two matrix should be same .
b.
When we multiply on matrix to other matrix then number of columns of first matrix equals to number of rows of second matrix.
Therefore, number of columns of matrix A is equals to number of rows of matrix B.So, we can multiply
=\times
=
Formula for multiply of matrix of order
Let A and B are square matrix of order
Let A= and B=
=
In similar way we multiply of matrix of order and matrix multiply of order
Let A and B are matrix of order
Let
=
In similar way we multiply two matrix of order
C.Matrix A is not a square matrix .Therefore, it is not a invertible matrix.
Therefore, the determinant of B is equal to zero therefore, inverse of matrix B does not exist.
Hence, Both matrix A and B are no invertible.