What is the domain and range of #y = ln((2x-1)/(x+1))#?
Domain is set of all positive real numbers greater than
Range is the entire real number system.
Given log functions can take values that are either above 0 or below infinite, basically the positive side of the Real number axis.
Of course, the range of the log function is the entire real number system.
Note in the above answer, I did not regard the complex numbers at all.