Question

Which of the following is true?
a.The domain of the function f(x) = log5x is all real numbers less than zero.
b.The range of the function f(x) = log5x is all real numbers.
c.The base of a logarithmic function can be a negative number.
d.The base of a logarithmic function can be zero.

Answer 1

only B is true

Answer 2

Put number i.e. less than 0, 0 and greater than 0. If at anyone of the three conditions is not satisfied then it is not included in domain. But answer is B. So all three conditions will satisfy your question :)