Class 12 Determinants · Mcq Single Correct1 Marksminors_and_cofactors
Class 12 Maths · Determinants · Mcq Single Correct #12
For P=\(\begin{bmatrix}1 & -1 & 2\\0 & 2 & -3\\3 & 2 & 4\end{bmatrix}\), let Cᵢⱼ denote a cofactor. Find C₃₁C₂₃.
✅ Step-by-Step Solution
Final Answer: Option (A): 5
- C₃₁=det([[-1,2],[2,−3]])=−1; C₂₃=−det([[1,−1],[3,2]])=−5. Their product is 5.
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