1
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
If $$A = \left[ {\matrix{ { - 3} & 2 \cr { - 1} & 0 \cr } } \right]$$ then $$A$$ satisfies the relation
A
$$A - 31 + 2\,{A^{ - 1}} = 0$$
B
$${A^2} + 2A + 2I = 0$$
C
$$\left( {A + I} \right)\left( {A + 2I} \right) = 0$$
D
$${e^A} = 0$$
2
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
If $$A = \left[ {\matrix{ { - 3} & 2 \cr { - 1} & 0 \cr } } \right]\,$$ then $${A^9}$$ equals
A
$$511\,\,A + 510\,\,I$$
B
$$309\,\,A + 104\,\,I$$
C
$$154\,\,A + 155\,\,I$$
D
$${e^{9A}}$$
3
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
$$X = {\left[ {\matrix{ {{x_1}} & {{x_2}} & {.......\,{x_n}} \cr } } \right]^T}$$ is an $$n$$-tuple non-
zero vector. The $$n\,\, \times \,\,n$$ matrix $$V = X{X^T}$$
A
has rank zero
B
has rank $$1$$
C
is orthogonal
D
has rank $$n$$
4
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
$${q_1},\,{q_2},{q_3},.......{q_m}$$ are $$n$$-dimensional vectors with $$m < n.$$ This set of vectors is linearly dependent. $$Q$$ is the matrix with $${q_1},\,{q_2},{q_3},.......{q_m}$$ as the columns. The rank of $$Q$$ is
A
less than $$m$$
B
$$m$$
C
between $$m$$ and $$n$$
D
$$n$$
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