Question

Suppose that f : R - R is a differentiable function such that f (0) = 1. If the derivative of f is less than 0 for every x in R then f is
A) bounded below on R
B) bounded above on [ 0,infinity)
C) bounded above on (-infinity, 0]
D) bounded on R
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Answer 1

Answer:

B) bounded above on [ 0, infinity]

i guess this should be the answer