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Two surfaces are said to be tangential at a point P if they have the same
tangent plane at P . Show that the surfaces z = √(2x²+2y²-1) and z = (1/3)√(x²+y²+4) are tangential at the point (1, 2, 3).
differentiate first then evaluate both at 1,2,3
tangent plane at P . Show that the surfaces z = √(2x²+2y²-1) and z = (1/3)√(x²+y²+4) are tangential at the point (1, 2, 3).
differentiate first then evaluate both at 1,2,3