Let f: [0, 2] → R be a twice differentiable function such that f''(x) > 0, for all x ∈ (0, 2). If ϕ(x) = f(x) + f(2 – x), then ϕ is:

Increasing on (0, 1) and decreasing on (1, 2)

Decreasing on (0, 1) and increasing on (1, 2)

Let f: [0, 2] → R be a twice differentiable function such that f''(x

1.	Let f: [0, 2] → R be a twice differentiable function such that f''(x) > 0, for all x ∈ (0, 2). If ϕ(x) = f(x) + f(2 – x), then ϕ is:
A.	Increasing on (0, 1) and decreasing on (1, 2)
B.	Decreasing on (0, 2)
C.	Decreasing on (0, 1) and increasing on (1, 2)
D.	Increasing on (0, 2)
Answer» D. Increasing on (0, 2)

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Let f: [0, 2] → R be a twice differentiable function such that f''(x) > 0, for all x ∈ (0, 2). If ϕ(x) = f(x) + f(2 – x), then ϕ is:

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