And we're given the graph of f of x and of y equals f of x, and the area between f of x and the x-axis over different intervals. Well, when you look at this, you actually don't even have to look at this graph over here because in general, if I have the definite integral of any function, f of x dx, from, let's say, a to the same value, from one value to the same value, this is always going to be equal to zero. We're going from three to three. We could be going from negative pi to negative pi. It's always going to be zero. One way to think about it, we're starting and stopping here at three, so we're not capturing any area. Let's do another one.