This is 954. Actually, let me write out the, this is one, two, three, four, five, six, seven, eight, nine, and 10. Now they want us to know, they wanna know what is the derivative of our function when f is equal to four. Well, they haven't told us even what the value of f is at four. We don't know what that point is. But what they're trying to do is, well, we're trying to make a best estimate. And using these points, we don't even know exactly what the curve looks like.