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In each of the following case, verift wh...

In each of the following case, verift whether the four given points are coplanar or not. `(0,-1,-1),(4,5,1),(3,9,4),(-4,4,4)`

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As `|(3+6,-2-3,4-2),(5+6,7-3,3-2),(-13+6,17-3,-1-2):|=|(9,-5,2),(11,4,1),(-7,14,-3):|=9(-12-14)+5(-33+7)+2(154+28)=9(-26)+5(-26)+2(182)=14xx(-26)+2xx182=0` The given points are coplanar.
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MBD PUBLICATION-THREE DIMENSIONAL GEOMETRY-QUESTION BANK
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