Class 12 Determinants · Mcq Single Correct1 Marksmatrix_inverse
Class 12 Maths · Determinants · Mcq Single Correct #74
For A=\(\begin{bmatrix}2 & 3\\5 & -2\end{bmatrix}\), A⁻¹=kA. Find k.
✅ Step-by-Step Solution
Final Answer: Option (B): 1/19
- A²=19I, so A⁻¹=A/19 and k=1/19.
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