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Let f(x) = x 2 + 2 1 x and g( x ) = x – x 1 , x ∈ R – {–1, 0, 1}. If h( x ) = ) ( ) ( x g x f , then the local minimum value of h( x ) is

1. 3
2. – 3
3. 2 2 −
4. 2 2

Correct answer: 2 2

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