So let me do that. So this right over here is L of x. That's L of x. And let's say this right over here, this right over here is the point 4.36 comma f of 4.36. And the way we're going to approximate this value is to figure out what, to figure out what this value is right over here. And what is this one going to be? This right over here is going to be, this is going to be 4.36 comma L of 4.36.