Question: In given equations find
(a) the cartesian equation of the plane containing the given points, and (b) a unit vector normal to the plane.
1. (1, 2, 1), (3, 1, -2), (2, 1, 4).
2. (2, 0, 3), (0, 1, 0), (2, 4, 5).
3. (-1, 2, -3), (2, 4, 1), (3, 0, 1).
4. (1, 2, 5), (-2, 1, 0), (0, 2, 0).