It's going to be sine of 3 pi over 2 minus sine of 0, which is equal to negative 1 minus 0, which is equal to negative 1. So what just happened here? The area under all this orange area that I just outlined is clearly not negative, or any area isn't a negative number. And the area isn't even 1. But what just happened here? Well, we saw in the first case that this first area was 1. The area of this first region right over here is 1.