An case in point I can think about will be the the origin while in the graph z = x^two - y^2. In the event you go together both x axis, the curve will improve exponentially (but equally) on each side.offered the partial derivatives ∂ƒ/∂x and ∂ƒ/∂y of ƒ exist in a. Note that ∇ƒ(a) is usually a vectorLike viewers could not be anymore ex