f (x) is a quadratic expression such that f (x) is negative when x \in (−\infty −5/3) \cup(3, \infty) and positive when x \in(-5/3 , 3) g (x) is another quadratic expression such that g (x) is negative when x \in(3,-9/2) and positive when x \in-[3,9 /2]. Thenthe sign of f({ x}) g(x ) in [ 0, 5] is

Correct Answer is : Positive in [0,3)∪(3,92) and negative in (92,5]

Positive in [0,9/2] and negative in (9/2,5)

Positive in [0,3)\cup(3,9/2) and negative in (9/2,5]

Positive in [0,3)\cup(3,9/2)\cup(9/2,5]

Negative in [0,3)\cup(3,9/2)\cup(9/2,5]

AP EAMCET Engineering 2018 Apr 22 Shift 2 Paper

Section: Mathematics

Question : 12 of 160

Marks: +1, -0

f (x) is a quadratic expression such that f (x) is negative when x∈(−∞−

)∪(3,∞) and positive when x∈(−

,3) g (x) is another quadratic expression such that g (x) is negative when x∈(3,−

) and positive when x∈−[3,

].
Thenthe sign of f(x) g(x) in [ 0, 5] is

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