Find the domain of each of the following functions: f(x, y, z) 3x-4y+2z √9-x²-y²-2² = {(x, y, z) = R³ | x² + y² + z² < 8} ○ {(x, y, z) = R³ | x² + y² + z² ≤ 9} ○ {(x, y, z) = R³ | x² + y² + z² <9} {(x, y, z) = R³ | x² + y² + x² > 9}

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