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Let f(x) = min {1, 1 + x sin x}, 0 ≤ x ≤ 2 π . If m is the number of points, where f is not differentiable and n is the number of points, where f is not continuous, then the ordered pair (m, n) is equal to

1. (2, 0)
2. (1, 0)
3. (1, 1)
4. (2, 1)

Correct answer: (1, 0)

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