Which of the following functions has a limited domain? Answer f(x) = x; f(x) = x ^ 2; f(x) = log(x); f(x) = x ^ (1/3)

The function f(x) = log(x) has a limited domain because the logarithm function is only defined for positive real numbers. The other functions, f(x) = x, f(x) = x ^ 2, and f(x) = x ^(1/3) are defined for all real numbers.