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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 26 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 26 maths textbook solution

Answers (1)

VSQ : 26

Anawer :  -11

Given : A=\left[\begin{array}{cc}3 & 1 \\ 2 & -3\end{array}\right]

Hint : find \left | A \right | and then use the formula of \left | adjA \right |

Solution : A=\left[\begin{array}{cc}3 & 1 \\ 2 & -3\end{array}\right]

\left | A \right |=-9-2

=-11

Now ,\left | adjA \right |=\left | A \right |^{n-1}

=\left ( -11 \right )^{2-1}

=-11

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