6. In Section 12.5, you learned that the distance from a point (ro, Yo, zo) to a plane ax+by+cz = d is |d – axo – byo – cz,l Va? + 62 + c2 Find the point on the graph of the surface S given by z = 2? + y? + 10 closest to the plane x + 2y – z = 0. Hint: on the surface S, z - x - 2y > 0.

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