Class 12 Determinants · Mcq Single Correct1 Marksdeterminant_properties
Class 12 Maths · Determinants · Mcq Single Correct #72
If \(\begin{vmatrix}α & 3 & 4\\1 & 2 & 1\\1 & 4 & 1\end{vmatrix}\)=0, find α.
✅ Step-by-Step Solution
Final Answer: Option (D): 4
- Expansion gives −2α+8=0, so α=4.
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