Hi guys, i need some hints to solve this very difficult problem from vector calculus:

Attachment 25814

please, help me!

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- Nov 19th 2012, 05:12 PMfrankitmhyperplane equation
Hi guys, i need some hints to solve this very difficult problem from vector calculus:

Attachment 25814

please, help me!

- Nov 23rd 2012, 11:00 AMHallsofIvyRe: hyperplane equation
The problem is to find the equation of the hyperplane tangent to the ellipse at the point .

Now, what is your difficulty? Can you find the gradient of the function? That will give a vector perpendicular to the ellipse at the give point. Do you know how to write the equation of a hyperplane given a normal vector and point?