What is the domain of f(x)=\ac1\rt9−x2f(x) = \ac{1}{\rt{9 - x^2}}f(x)=\ac1\rt9−x2?
−3<x<3-3 < x < 3−3<x<3
−3\qx\q3-3 \q x \q 3−3\qx\q3
x>3x > 3x>3 or x<−3x < -3x<−3
All real numbers