(a) Find an equation of the tangent plane to the surface at the given point. x2 + y2 + z2 = 14, (1, 2, 3) (b) Find a set of symmetric equations for the normal line to the surface at the given point Ox - 1 = y - 2 = z - 3 O X - 1 - y – 2 – z - 3 %3D 1 3 O x-1 - Y-2 = 2-3 X - 1 z - 3 14 14 14 14 14 14 O X = Y = Z 1 2

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