Section 14.6: Directional Derivatives & Gradient Vector
Exercise 54
At what point on the ellipsoid \(x^2 + y^2 + 2z^2 = 1\) is the tangent plane parallel to the plane \(x + 2y + z = 1\)?
At what point on the ellipsoid \(x^2 + y^2 + 2z^2 = 1\) is the tangent plane parallel to the plane \(x + 2y + z = 1\)?