Question
Matrix is not invertible if-
- = – 15
- = – 17
- = – 16
- = – 18
The correct answer is: = – 17
We are given that matrix A is not invertible on what condition
We are given that A is not invertible
Hence |A| = 0
λ(0-1)+1(-6+1)+4(-3+0)=0
-λ - 5 - 12 = 0
λ = -17
Therefore the value of λ= -17
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