SOLUTION: Find the domain of the function f(x) = ln(3x)

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Question 963606: Find the domain of the function f(x) = ln(3x)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29+=+ln%283x%29
The domain is all the values a variable can take on without causing an invalid function.
In this case, if x=0 then what's inside the parentheses is 0, which you can't take the log of. So the domain is x+%3E0.
domain:
{ x element R : x%3E0 } (all positive real numbers)

+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+ln%283x%29%29+