Question

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part carries 1 mark.
17. Case Study Based-1: Applications of Parabolas
Parabola Reflector: Parabolic reflectors have the property that the light rays or sound waves coming
parallel to its axis converge at the focus and then it reflects them parallel to the axis. Due to this property,
parabolic reflectors are used in cars, automobiles, loudspeakers, solar cookers, telescopes etc,
A parabola is the locus of a point which moves in a plane such that its distance from a fixed point in the
plane is always equal to its distance from a fixed straight line in the same plane.
(1) For the given quadratic polynomial p(x) = 3x2 – 15x +, find its sum and product of zeroes.
a. -5, 1/15 (b) 5,1/15
(C) 5,-1/15
(d)-5, -1/15
1
1
15
15
15
2​

Answer 1

45555526848351709321700966288+63211455669877084-2361405+-2178268=