1
GATE ECE 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following statements is NOT true for a square matrix $$A$$?
2
GATE ECE 2013
MCQ (Single Correct Answer)
+1
-0.3
Let $$A$$ be an $$m\,\, \times \,\,n$$ matrix and $$B$$ an $$n\,\, \times \,\,m$$ matrix. It is given that determinant $$\left( {{{\rm I}_m} + AB} \right) = $$determinant $$\left( {{{\rm I}_n} + BA} \right),$$ where $${{{\rm I}_k}}$$ is the $$k \times k$$ identity matrix. Using the above property, the determinant of the matrix given below is $$\left[ {\matrix{
2 & 1 & 1 & 1 \cr
1 & 2 & 1 & 1 \cr
1 & 1 & 2 & 1 \cr
1 & 1 & 1 & 2 \cr
} } \right]$$
3
GATE ECE 2013
MCQ (Single Correct Answer)
+1
-0.3
The minimum eigenvalue of the following matrix is $$\left[ {\matrix{
3 & 5 & 2 \cr
5 & {12} & 7 \cr
2 & 7 & 5 \cr
} } \right]$$
4
GATE ECE 2012
MCQ (Single Correct Answer)
+1
-0.3
Given that $$A = \left[ {\matrix{
{ - 5} & { - 3} \cr
2 & 0 \cr
} } \right]$$ and $${\rm I} = \left[ {\matrix{
1 & 0 \cr
0 & 1 \cr
} } \right],$$ the value of $${A^3}$$ is
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