Ononot — The surface 2x^2 + y^2 + 3z^2 = 9 passes through (1, 2, 1).

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Multivariable & Vectorhard

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The surface $2x^2 + y^2 + 3z^2 = 9$ passes through $(1, 2, 1)$ . Find the outward unit normal vector at this point.