Question

Give the domain of y = ln x.

Answer 1

Remember that

$y=\ln x=\log _ex\Leftrightarrow e^y=x$

And e^y can have any value in the interval (0, infinite).

Therefore, the domain of ln(x) is

$\text{domain(}\ln (x))=(0,\infty)$

The answer is x in (0, infinite)