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If the domain of the function ƒ(x) = cos –1 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − 4 | x | 2 + ( ) 1 e } x 3 { log − − is [– α , β ) – { γ }, then α + β + γ is equal to

1. 8
2. 12
3. 9
4. 11

Correct answer: 11

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