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Please Solve RD Sharma Class 12 Chapter Algebra of Matrices Exercise 4.1 Question 3 Maths Textbook Solution.

Answers (1)

Answer: The order of matrix R_{1}= 1\times 4
                And the order of matrix C_{2}= 3\times 1
Given: A be a matrix of order 3\times 4
      Here we have to determine the order of matrices R_{1} and C_{2}
Hint: We have to write the order along row and again along column
Solution: Here A be a matrix of order 3\times 4
                 So, A= \left [ a_{ij} \right ]_{3\times 4}
R_{1}= first row of A= \begin{bmatrix} a_{11} & a_{12} & a_{13} & a_{14} \end{bmatrix}
So, order of Matrix R_{1}= 1\times 4
Again, C_{2} = second column of
A= \begin{bmatrix} a_{12}\\ a_{22}\\ a_{32} \end{bmatrix}
Therefore, order of C_{2}= 3\times 1 .

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