Find equation of the tangent plane

In summary, the purpose of finding the equation of the tangent plane is to determine the slope and direction of a curve or surface at a specific point. To find the equation, you need to know the coordinates of the point and the partial derivatives of the surface at that point. The equation can be used for any type of surface and the normal vector is perpendicular to the tangent plane. The equation can also be used to find the normal vector by taking the partial derivatives of the surface.
  • #1
andrey21
476
0
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.
 
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  • #2
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
 

What is the purpose of finding the equation of the tangent plane?

The equation of the tangent plane is used to determine the slope and direction of a curve or surface at a specific point. This is important in various mathematical and scientific fields, such as physics, engineering, and calculus.

How do you find the equation of the tangent plane?

To find the equation of the tangent plane, you need to know the coordinates of the point where the tangent plane intersects the surface, as well as the partial derivatives of the surface at that point. These values are used to create a linear approximation of the surface, resulting in the equation of the tangent plane.

Can the equation of the tangent plane be used for any type of surface?

Yes, the equation of the tangent plane can be used for any type of surface, as long as the partial derivatives are defined at the specified point. This includes both smooth and non-smooth surfaces, such as spheres, cones, and even fractals.

What is the relationship between the tangent plane and the normal vector?

The normal vector of the surface at a given point is perpendicular to the tangent plane at that point. This means that the dot product of the normal vector and any vector lying in the tangent plane will always be zero.

Can the equation of the tangent plane be used to find the normal vector?

Yes, the normal vector at a specified point can be found by taking the partial derivatives of the surface and using them to create the equation of the tangent plane. The coefficients of the equation will then correspond to the components of the normal vector.

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