Kevin C. answered 08/17/19
Successful Math Tutor -- Recently retired high school math teacher
y = 1 + ln(-x) → Domain: -x>0 or x<0; Range: y all real numbers
Exchange x and y → x = 1 + ln(-y) → Solve for y
ln(-y) = x - 1 → -y = ex-1 = ex/e
So y = -ex/e Or if f(x) = 1 + ln(-x), then f-1(x) = -ex/e
Domain: x all real numbers Range: y<0;

Kevin C.
08/17/19