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  • Explain Solution for RD Sharma Maths Class 12 Chapter 6 Adjoint and inverse of a Matrix Exercise very short answer type Question 1 maths textbook solution

Explain Solution for RD Sharma Maths Class 12 Chapter 6 Adjoint and inverse of a Matrix Exercise very short answer type Question 1 maths textbook solution        

Answers (1)

VSQ 1

Answer :  

            adj A=\left[\begin{array}{rr} -2 & -4 \\ -7 & -3 \end{array}\right]

Given: 

           A=\left[\begin{array}{rr} -3 & 4 \\ 7 & -2 \end{array}\right]

Hint ; Find the cofactors of the matrix A and then write adj A 

Solution ;

 A=\left[\begin{array}{rr} -3 & 4 \\ 7 & -2 \end{array}\right]

c_{11}=-2   c_{12}=-4   c_{21}=-7   c_{22}=-3

 adj A=\left[\begin{array}{rr} -2 & -4 \\ -7 & -3 \end{array}\right]

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