Section 14.6: Directional Derivatives & Gradient Vector
Exercise 29
Find all points at which the direction of fastest change of the function \(f(x, y) = x^2 + y^2 - 2x - 4y\) is \(\mathbf{i} + \mathbf{j}\).
Find all points at which the direction of fastest change of the function \(f(x, y) = x^2 + y^2 - 2x - 4y\) is \(\mathbf{i} + \mathbf{j}\).