The magnitude of the directional derivative of the

Last Updated :
Discuss
Comments

The magnitude of the directional derivative of the function [Tex]f\left( {x,y} \right) = {x^2} + 3{y^2}[/Tex] in a direction normal to the circle [Tex]\,{x^2} + {y^2} = 2,[/Tex] at the point [Tex](1,1),[/Tex] is

[Tex]4\sqrt 2 [/Tex]

[Tex]5\sqrt 2 [/Tex]

[Tex]7\sqrt 2 [/Tex]

[Tex]9\sqrt 2 [/Tex]

This question is part of this quiz :

Directional Derivative
Tags:
Mathematics
Share your thoughts in the comments