1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The value of $$\int\limits_{ - \pi }^\pi {{{{{\cos }^2}} \over {1 + {a^x}}}dx,\,\,a > 0,} $$ is
A
$$a\,\pi $$
B
$${\pi \over 2}$$
C
$${\pi \over a}$$
D
$${2\pi }$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Area of the greatest rectangle that can be inscribed in the
ellipse $${{{x^2}} \over {{a^2}}} + {{{y^2}} \over {{b^2}}} = 1$$
A
$$2ab$$
B
$$ab$$
C
$$\sqrt {ab} $$
D
$${a \over b}$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A spherical iron ball $$10$$ cm in radius is coated with a layer of ice of uniform thickness that melts at a rate of $$50$$ cm$$^3$$ /min. When the thickness of ice is $$5$$ cm, then the rate at which the thickness of ice decreases is
A
$${1 \over {36\pi }}$$ cm/min
B
$${1 \over {18\pi }}$$ cm/min
C
$${1 \over {54\pi }}$$ cm/min
D
$${5 \over {6\pi }}$$ cm/min
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
If $${A^2} - A + 1 = 0$$, then the inverse of $$A$$ is :
A
$$A+I$$
B
$$A$$
C
$$A-I$$
D
$$I-A$$
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