- #1

- 99

- 13

- Homework Statement
- Find the directional derivative of ##V^2## where ##\vec V = \hat ixy^2 + \hat jzy^2 + \hat kxz^2## at the point (2,0,3), in the direction of the outward normal to the sphere ##x^2+y^2+z^2=14## at the point (3,4,0).

- Relevant Equations
- Directional Derivative = ##\nabla f.\hat n##

I tried to calculate the directional derivative but the answer that I found was 194.4 but the answer marked in the book was 540. I tried a lot but couldn't understand what my mistake was.

Please let me know what mistake I did.

Please let me know what mistake I did.