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Let f : R → R be a twice differentiable function such that f

1. = 1. If F(x) = xƒ(x) for all x ∈ R, ∫ ∫ = 2 0 2 0 2 " F x and 6 dx ) x ( ' xF (x) dx = 40, then F'
2. + ∫ 2 0 dx ) x ( F is equal to
3. 11
4. 15 (3) 9 (4) 13

Correct answer: + ∫ 2 0 dx ) x ( F is equal to

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