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Need solution for RD Sharma maths class 12 chapter 4 Algebra of Matrices exercise Fill in the blank question 7
Answers (1)
Answer:
B is an n x m matrix.
Hint:
Use the basic concept of matrix order.
Given:
A is an m x n matrix and AB and BA are defined.
Solution:
Multiplication is possible, if first matrix has same number of columns as number of rows in second matrix.
AB is defined so number of rows in B is n
BA is defined so number of columns in B is m
Hence order of matrix B is
n x m
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