What happens to the value of f(x) = log4x as x approaches +∞?

The value of as x approaches +∞ is:

                    f(x) → ∞

We are given a logarithmic function f(x) as:

We know that the logarithmic function is defined for x>0 and the graph of the function increases continuously and goes or tends to infinity as x tends to infinity.

         Hence, here also if x → ∞

                  then  f(x) → ∞

Also it could be seen with the help of the graph of the function f(x)