BITSAT 2012 Paper

Section: Mathematics

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Question : 106 of 150

Marks: +1, -0

If f (x) =

a2−1

a2+1

x3 - 3x + 5 is a decreasing function of x in R, then the set of possible values of a (independent of x) is

(1, ∞)
(–∞, –1)
[–1, 1]
None of these

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