well, do what i said. it makes sense. in general, when you want to find the end behavior (that is, what happens to the function at the ends, as you go far to the right and far to the left) you take the infinite limits. that is, the limit as and the limit as
here, however, the log is not defined for negative numbers, so we take the left end to be the limit as . how does the function behave for those limits?