1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Let $$A = \left| {\matrix{ 5 & {5\alpha } & \alpha \cr 0 & \alpha & {5\alpha } \cr 0 & 0 & 5 \cr } } \right|.$$ If $$\,\,\left| {{A^2}} \right| = 25,$$ then $$\,\left| \alpha \right|$$ equals
A
$$1/5$$
B
$$5$$
C
$${5^2}$$
D
$$1$$
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
$$\int {{{dx} \over {\cos x + \sqrt 3 \sin x}}} $$ equals
A
$$\log \,\tan \,\left( {{x \over 2} + {\pi \over {12}}} \right) + C$$
B
$$\log \,\tan \,\left( {{x \over 2} - {\pi \over {12}}} \right) + C$$
C
$$\,{1 \over 2}\,\log \,\tan \,\left( {{x \over 2} + {\pi \over {12}}} \right) + C$$
D
$$\,{1 \over 2}\,\log \,\tan \,\left( {{x \over 2} - {\pi \over {12}}} \right) + C$$
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Let $$F\left( x \right) = f\left( x \right) + f\left( {{1 \over x}} \right),$$ where $$f\left( x \right) = \int\limits_l^x {{{\log t} \over {1 + t}}dt,} $$ Then $$F(e)$$ equals
A
$$1$$
B
$$2$$
C
$$1/2$$
D
$$0$$
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
The solution for $$x$$ of the equation $$\int\limits_{\sqrt 2 }^x {{{dt} \over {t\sqrt {{t^2} - 1} }} = {\pi \over 2}} $$ is
A
$${{\sqrt 3 } \over 2}$$
B
$$2\sqrt 2 $$
C
$$2$$
D
None
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