Question: 2. If f (x) =x+ 4x + 2x + 1 is a monotonically decreasing functioni of x in the largest possible interval (-2, -2/3),

2. If f (x) =x+ 4x + 2x + 1 is a

2. If f (x) =x+ 4x + 2x + 1 is a monotonically decreasing functioni of x in the largest possible interval (-2, -2/3), then a. 1=4 c. 1=-1 b 1=2 d 1 has no real value 2.A

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