Question: Find all points on the surface given below where the tangent plane is horizontal. z= 3x2 - 2xy-3y- 38x+6y The coordinates are . (Type

Find all points on the surface given below where the tangent plane

Find all points on the surface given below where the tangent plane is horizontal. z= 3x2 - 2xy-3y- 38x+6y The coordinates are . (Type an ordered triple. Use a comma to separate answers as needed.)

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