The plane tangent to the surface x 2 + xyez + y3 = 1 at the point (2, 1, 0) is parallel
Chapter 2, Problem 26(choose chapter or problem)
The plane tangent to the surface x 2 + xyez + y3 = 1 at the point (2, 1, 0) is parallel to the vector 3i + 5j 3k.
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