Find equation of the tangent plane

andrey21

Find the equation of the tangent plane to the level surface of the scalar field

[tex]\xi[/tex](x,y,z) = x²+y²+z²

at the point (1,1,2)

Looking the work through this question with someone, not to sure where to start.

lanedance

i would start with the general equation of a plane...

the tangent plane can be thought of as a linear approximation of the function at that point

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andrey21	Find equation of the tangent plane Find the equation of the tangent plane to the level surface of the scalar field [tex]\xi[/tex](x,y,z) = x²+y²+z² at the point (1,1,2) Looking the work through this question with someone, not to sure where to start.

lanedance Recognitions: Homework Help	i would start with the general equation of a plane... the tangent plane can be thought of as a linear approximation of the function at that point