So I'm going to use green. So we have the integral from a to c of f of x dx. And that, of course, is going to represent this area right over here, from a to c under the curve f of x, above the x axis. So that's that. And then we could have the integral from c to b of f of x dx. And that, of course, is going to represent this area right over here. Well, the one thing that probably jumps out at you is that the entire area from a to b, this entire area, is just a sum of these two smaller areas.