1
GATE PI 2011
MCQ (Single Correct Answer)
+2
-0.6
If a matrix $$A = \left[ {\matrix{ 2 & 4 \cr 1 & 3 \cr } } \right]$$ and matrix $$B = \left[ {\matrix{ 4 & 6 \cr 5 & 9 \cr } } \right]$$ the transpose of product of these two matrices i.e., $${\left( {AB} \right)^T}$$ is equal to
A
$$\left[ {\matrix{ {28} & {19} \cr {34} & {47} \cr } } \right]$$
B
$$\left[ {\matrix{ {19} & {34} \cr {47} & {28} \cr } } \right]$$
C
$$\left[ {\matrix{ {48} & {33} \cr {28} & {19} \cr } } \right]$$
D
$$\left[ {\matrix{ {28} & {19} \cr {48} & {33} \cr } } \right]$$
2
GATE PI 2009
MCQ (Single Correct Answer)
+2
-0.6
The value of $${x_3}$$ obtained by solving the following system of linear equations is $$${x_1} + 2{x_2} - 2{x_3} = 4$$$ $$$2{x_1} + {x_2} + {x_3} = - 2$$$ $$$ - {x_1} + {x_2} - {x_3} = 2$$$
A
$$-12$$
B
$$-2$$
C
$$0$$
D
$$12$$
3
GATE PI 2008
MCQ (Single Correct Answer)
+2
-0.6
The eigen vector pair of the matrix $$\left[ {\matrix{ 3 & 4 \cr 4 & { - 3} \cr } } \right]$$ is
A
$$\left[ {\matrix{ 2 \cr 1 \cr } } \right]\left[ {\matrix{ 1 \cr { - 2} \cr } } \right]$$
B
$$\left[ {\matrix{ 2 \cr 1 \cr } } \right]\left[ {\matrix{ 1 \cr 2 \cr } } \right]$$
C
$$\left[ {\matrix{ { - 2} \cr 1 \cr } } \right]\left[ {\matrix{ 1 \cr { - 2} \cr } } \right]$$
D
$$\left[ {\matrix{ { - 2} \cr 1 \cr } } \right]\left[ {\matrix{ 1 \cr 2 \cr } } \right]$$
4
GATE PI 2008
MCQ (Single Correct Answer)
+2
-0.6
The inverse of matrix $$\left[ {\matrix{ 0 & 1 & 0 \cr 1 & 0 & 0 \cr 0 & 0 & 1 \cr } } \right]$$ is
A
$$\left[ {\matrix{ 0 & 1 & 0 \cr 1 & 0 & 0 \cr 0 & 0 & 1 \cr } } \right]$$
B
$$\left[ {\matrix{ 0 & { - 1} & 0 \cr { - 1} & 0 & 0 \cr 0 & 0 & { - 1} \cr } } \right]$$
C
$$\left[ {\matrix{ 0 & 1 & 0 \cr 0 & 0 & 1 \cr 1 & 0 & 0 \cr } } \right]$$
D
$$\left[ {\matrix{ 0 & { - 1} & 0 \cr 0 & 0 & { - 1} \cr { - 1} & 0 & 0 \cr } } \right]$$
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