Can anyone help please, Find the normal line to the level curve of the surface given by x^2 + 3y^2 = 7 at the pointM(2,-1)
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Originally Posted by sonia1 Find the normal line to the level curve of the surface given by x^2 + 3y^2 = 7 at the pointM(2,-1) The direction vector of the line is $\displaystyle \nabla \Phi (2, - 1)\text{ where } \Phi = x^2 + 3y^2 - 7$.
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