Tìm kiếm Tư liệu Giáo dục
A Non-Differentiable Surface
Nguồn: http://clem.mscd.edu
Người gửi: Nguyễn Thị Ánh Nguyệt (trang riêng)
Ngày gửi: 16h:39' 25-10-2007
Dung lượng: 277.1 KB
Số lượt tải: 13
Mô tả: The surface f[x, y] = Sqrt[Abs[x y]] is continuous at the origin and both of the first order partial derivatives are defined there. (That is, each of the curves in which the surface intersects the vertical coordinate planes has a tangent line at the origin.) Nevertheless, the function is not differentiable there. (The surface has no tangent plane at the origin.)
Người gửi: Nguyễn Thị Ánh Nguyệt (trang riêng)
Ngày gửi: 16h:39' 25-10-2007
Dung lượng: 277.1 KB
Số lượt tải: 13
Mô tả: The surface f[x, y] = Sqrt[Abs[x y]] is continuous at the origin and both of the first order partial derivatives are defined there. (That is, each of the curves in which the surface intersects the vertical coordinate planes has a tangent line at the origin.) Nevertheless, the function is not differentiable there. (The surface has no tangent plane at the origin.)
Số lượt thích:
0 người
Các ý kiến mới nhất