I have a packet I'm supposed to have done by Wednesday when school starts and there are some questions about logarithms that are losing me. We did cover them last year but I never really got them. And I need to know how to find the ranges of equations such as y=ln(cos(x)) and y=ln(9-x²). It would seem to me that any number would work in the domain except for one that makes it negative. So that would mean (second one for example) that x would need to be less than the absolute value of 3. So wouldn't the range be from where y is highest (at x=0) to the lowest....but what's the lowest? When x=2.999999, y=-12.023...., but my calculator's graph only goes down to about -1. So I'm totally lost and missing something. Please help