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Question
If `|(α, 3, 4),(1, 2, 1),(1, 4, 1)|` = 0, then the value of α is ______.
Options
1
2
3
4
Solution
If `|(α, 3, 4),(1, 2, 1),(1, 4, 1)|` = 0, then the value of α is 4.
Explanation:
If two rows/columns are identical in any determinant, the value becomes zero.
In given determinant on comparing C1 and C3.
We conclude α = 4.
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