So if we were to take the slope of the secant line, so f of two minus f of zero, all that over two minus zero, this is equal to negative two minus zero. All of that over two, which is equal to negative two over two, which is equal to negative one. And so, and we also know that we meet the continuity and differentiability conditions. And so we could say, and since f is generally differentiable, generally differentiable, differentiable, it will be differentiable, differentiable, and continuous over the interval from zero to two. And I say the closed interval. You just have to be differentiable over the open interval, but it's even better, I guess, if you're differentiable over the closed interval, because you have to be continuous over the closed interval. And so, and since f is generally differentiable, it will be differentiable and continuous over zero, two.