Question R16 Q21 - NSB 2013

What is the largest possible real domain of the function h(x) = ln(x² – 9) [h of x equals the natural log of the quantity x squared minus 9]?

W) (-∞, ∞)

X) (-∞, −3) U (3,∞) [the open interval from negative infinity to negative 3 union the open interval from 3 to positive infinity]

Y) (-3,3)

Z) (3,∞)

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