1.

f(x) is quadratic expression such that f(x) is negative when x in (-oo, - (5)/(3))cup (3,oo) and positive when x in (- (5)/(3),3) g(x) is another quadratic expression sunc that g (x) is negative when x in (3, 9/4) and positive when x in R - [3,9/2] Then, the sign of f(x) g(x) is [0,5] is

Answer»

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)` and negative in `(9/5 , 5]`
positive in `(0,3) cup (3,9/2) cup (9/2,5]`

Answer :B


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