SOLUTION: how do i find the domain of f(x)=2-ln(7x)? and the domain of f(x)=log(4)(x-4)^2? I am struggling with these....typical for someone out of math for 25 years.

Algebra ->  Functions -> SOLUTION: how do i find the domain of f(x)=2-ln(7x)? and the domain of f(x)=log(4)(x-4)^2? I am struggling with these....typical for someone out of math for 25 years.      Log On


   

Question 366460: how do i find the domain of f(x)=2-ln(7x)?
and the domain of f(x)=log(4)(x-4)^2?
I am struggling with these....typical for someone out of math for 25 years.
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
For the first function must make sure that 7x >0, or x>0 (after dividing both sides of the inequality by 7).
For the second function, %28x-4%29%5E2+%3E0. This is just the set of all real numbers except x = 4.