Whoops, I drew a part that didn't look like a function. It might do something like this and oscillate really quickly. It might be nice and smooth and just kind of go and do something just like that, kind of connect the dots. We don't know. But we can still do the approximation using a right Riemann sum with three equal subdivisions. How do we do that? Well, we're thinking about the area from x equals one to x equals 10.