what is the domain of f(x)=-ln(-x) and the inverse
ln(x) has domain x > 0
so, -ln(-x) has domain -x > 0 or x < 0, but its range is all real y
y = -ln(-x)
-y = ln(-x)
e^(-y) = -x
x = -e^(-y)
f-1(x) = -e-x
Note that the domain of f-1 is all reals, but the range is y < 0