So we just care what happens between those points. We don't care that the particle's distance from the starting point was five meters at t equals two. So this right over here is actually unnecessary information. So the first thing that you might want to think about is well maybe distance is just the integral of the velocity function. We see that multiple times. If you want to find the change in a quantity, you just say the starting time and the ending time, and then you integrate the rate function. So wouldn't it just be that?