1
IIT-JEE 2012 Paper 1 Offline
MCQ (Single Correct Answer)
+4
-1
The point $$P$$ is the intersection of the straight line joining the points $$Q(2, 3, 5)$$ and $$R(1, -1, 4)$$ with the plane $$5x-4y-z=1.$$ If $$S$$ is the foot of the perpendicular drawn from the point $$T(2, 1, 4)$$ to $$QR,$$ then the length of the line segment $$PS$$ is
A
$${{1 \over {\sqrt 2 }}}$$
B
$${\sqrt 2 }$$
C
$$2$$
D
$${2\sqrt 2 }$$
2
IIT-JEE 2012 Paper 1 Offline
Numerical
+4
-0
Let $$S$$ be the focus of the parabola $${y^2} = 8x$$ and let $$PQ$$ be the common chord of the circle $${x^2} + {y^2} - 2x - 4y = 0$$ and the given parabola. The area of the triangle $$PQS$$ is
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3
IIT-JEE 2012 Paper 1 Offline
Numerical
+4
-0
Let $$p(x)$$ be a real polynomial of least degree which has a local maximum at $$x=1$$ and a local minimum at $$x=3$$. If $$p(1)=6$$ and $$p(3)=2$$, then $$p'(0)$$ is
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4
IIT-JEE 2012 Paper 1 Offline
Numerical
+4
-0
Let $$f:IR \to IR$$ be defined as $$f\left( x \right) = \left| x \right| + \left| {{x^2} - 1} \right|.$$ The total number of points at which $$f$$ attains either a local maximum or a local minimum is
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