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The position vectors of the vertices, A,B,C of a tetrahedron ABCD are hati+hatj+hatk,hati.3hati. The altitude from vertex D to opposite face ABC meets the median line AF of DeltaABCat the point E. IF AD=4 and volume of tetrahedron is (2sqrt2)/3 then barE is |
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Answer» `3hati-hatj-hatk` |
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