Hallo

Im a bit stuck.

I need to graph the function f(x) = ln(9-x^2) to find domain and range.

I assumed x > 3 as cant take ln of 0 or negative number. My graph came out looking like a nike tick.

However, when i checked my answer on graphics calculator, the graph is a u-shaped! with some negative values!

Im very confused. How do i get the right answer?

Thank you for your time.

LINK: graph of ln(9-x^2) ln(9-x^2) - Wolfram|Alpha