When I did the homework. I was under the impression that RRAM used only the right values (the highest) of the subintervals and LRAM only the left. Yet now I read in this book called 1000 Calculus Problems for Those Who Don't Speak Math, I find out that RRAM is whatever value, typically an interval, is on the outside of the triangle. And LRAM the inside. That makes perfect sense, yet my textbook says nothign about that. It only showed an example of an increasing function which has the interval on the right side for RRAM and left for LRAM. So since they didn't give the names, I thought they were "right ram" and "left ram."

So, what's the truth of the matter? Thanks!