1) Even and is strictly increasing in (0, ∞) 2) Odd and is strictly decreasing in (–∞,∞) 3) Odd and is strictly increasing in (–∞,∞) 4)... View Article
1) [–1, 1] 2) (–∞, 1) 3) [1, +∞) 4) None of these Solution: (2) (–∞, 1) f (x) = x4 – 4x For f (x) to be decreasing, f’ (x) < 0... View Article