1
IIT-JEE 1983
Subjective
+3
-0
Evaluate : $$\int\limits_0^{\pi /4} {{{\sin x + \cos x} \over {9 + 16\sin 2x}}dx} $$
2
IIT-JEE 1983
Subjective
+3
-0
Find the area bounded by the $$x$$-axis, part of the curve $$y = \left( {1 + {8 \over {{x^2}}}} \right)$$ and
the ordinates at $$x=2$$ and $$x=4$$. If the ordinate at $$x=a$$ divides the area into two equal parts, find $$a$$.
3
IIT-JEE 1983
Subjective
+3
-0
If $$\left( {a + bx} \right){e^{y/x}} = x,$$ then prove that $${x^3}{{{d^2}y} \over {d{x^2}}} = {\left( {x{{dy} \over {dx}} - y} \right)^2}$$
4
IIT-JEE 1983
True or False
+1
-0
If the letters of the word "Assassin" are written down at random in a row, the probability that no two S's occur together is $$1/35$$
A
TRUE
B
FALSE
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