Find equation of the tangent plane

andrey21 · Apr 22, 2011

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

\xi(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 · Apr 22, 2011

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

Find equation of the tangent plane

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