Answer:
To find the value of f(12) in a logarithmic function, we need to know the specific equation or form of the logarithmic function. Without that information, it is not possible to provide an accurate answer. Logarithmic functions typically have the form f(x) = log_b(x), where b is the base of the logarithm.
Please provide the equation or more information about the logarithmic function so that I can assist you in finding the value of f(12).