So let's do that. So this is going to be the same thing as the limit as delta x approaches zero. And I'm gonna rewrite this part right over here. I'm gonna essentially divide and multiply by a change in u. So I can rewrite this as delta y over delta u times delta u, whoops, times delta u over delta x. Change in y over change in u times change in u over change in x. And you can see, these are just going to be numbers here.