What is the domain of f(x)=ln(x2−1)f(x) = \ln(x^2 - 1)f(x)=ln(x2−1)?
x>1x > 1x>1
x<−1x < -1x<−1 or x>1x > 1x>1
x≠−1,1x \neq -1, 1x=−1,1
all real numbers