Example 9-3-1 - Maple Help



Chapter 9: Vector Calculus



Section 9.3: Differential Operators



Example 9.3.1



 For , obtain $\nabla f$ at the point $\left(x,y\right)=\left(1,1\right)$. Show that at this point, the gradient vector is orthogonal to a vector tangent to the level curve through this point.