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Use the triple scalar product to determine whether the given points lie in the same plane.
A(1, 2, 3), B(3, -4, 8),
C(7, -1, 1), D(5, 5, -4)

  • CALCULUS 3 -

    The scalar triple product P among three vectors U,V and W is defined as follows:
    |P| represents the volume of the parallelepiped formed by the vectors U, V and W.
    Consequently, if U, V and W are coplanar, P=0.

    Since 4 points (A,B,C,D) are given, three vectors can be formed where
    U=AB, V=AC, and W=AD.
    Calculate the triple scalar product as described above and if the result is zero, then the four points are coplanar.

  • CALCULUS 3 -


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