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anonymous

  • 5 years ago

Find an equation of the plane passing through the points A(1,2,4), B(3,-1,2) and C(2,1,1).

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  1. dumbcow
    • 5 years ago
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    set up a system of equations find solution using cramers rule which involves finding determinate of a 3X3 matrix

  2. dumbcow
    • 5 years ago
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    http://en.wikipedia.org/wiki/Plane_%28geometry%29#Method_2

  3. anonymous
    • 5 years ago
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    Or between A and B <1-3, 2-(-1), 4-2> and then do the same between A and C. Cross those 2 vectors. That is how you start.

  4. dumbcow
    • 5 years ago
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    sorry its a little late but just in case you haven't figured it out yet solution: 7x +4y + z -19 = 0 or z = -7x -4y +19

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