1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Let $$A = \left( {\matrix{ 0 & 0 & { - 1} \cr 0 & { - 1} & 0 \cr { - 1} & 0 & 0 \cr } } \right)$$. The only correct

statement about the matrix $$A$$ is

A
$${A^2} = 1$$
B
$$A=(-1)I,$$ where $$I$$ is a unit matrix
C
$${A^{ - 1}}$$ does not exist
D
$$A$$ is a zero matrix
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
If $${a_1},{a_2},{a_3},.........,{a_n},......$$ are in G.P., then the value of the determinant

$$\left| {\matrix{ {\log {a_n}} & {\log {a_{n + 1}}} & {\log {a_{n + 2}}} \cr {\log {a_{n + 3}}} & {\log {a_{n + 4}}} & {\log {a_{n + 5}}} \cr {\log {a_{n + 6}}} & {\log {a_{n + 7}}} & {\log {a_{n + 8}}} \cr } } \right|,$$ is

A
$$-2$$
B
$$1$$
C
$$2$$
D
$$0$$
3
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
If $$\int {{{\sin x} \over {\sin \left( {x - \alpha } \right)}}dx = Ax + B\log \sin \left( {x - \alpha } \right), + C,} $$ then value of
$$(A, B)$$ is
A
$$\left( { - \cos \alpha ,\sin \alpha } \right)$$
B
$$\left( { \cos \alpha ,\sin \alpha } \right)$$
C
$$\left( { - \sin \alpha ,\cos \alpha } \right)$$
D
$$\left( { \sin \alpha ,\cos \alpha } \right)$$
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
$$\int {{{dx} \over {\cos x - \sin x}}} $$ is equal to
A
$${1 \over {\sqrt 2 }}\log \left| {\tan \left( {{x \over 2} + {{3\pi } \over 8}} \right)} \right| + C$$
B
$${1 \over {\sqrt 2 }}\log \left| {\cot \left( {{x \over 2}} \right)} \right| + C$$
C
$${1 \over {\sqrt 2 }}\log \left| {\tan \left( {{x \over 2} - {{3\pi } \over 8}} \right)} \right| + C$$
D
$$\,{1 \over {\sqrt 2 }}\log \left| {\tan \left( {{x \over 2} - {\pi \over 8}} \right)} \right| + C$$
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