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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 12 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 12 maths textbook solution

Answers (1)

VSQ : 12

Answer : 4

Given : adj(2A) = K adj(A) and A is a square matrix of order 3

Hint : you must know about the concept of square matrix

Solution : We know that

\begin{aligned} &\operatorname{adj}(K A)=K^{n-1} \operatorname{adj}(A) \\ &\operatorname{adj}(2 A)=2^{3-1} \operatorname{adj}(A) \quad(n=3) \\ &\operatorname{adj}(2 A)=4 a d j A \\ &K=4 \end{aligned}

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