1.

The position vectors of the points A,B,C are given to be 2overset^^i+overset^^j-overset^^k,overset^^3i-overset^^2j+overset^^k"and" 1overset^^i+4overset^^j-3overset^^k respectively.Prove that A,B,C are collinear

Answer»

SOLUTION :From `vec(AB)=-vec(AC)`
`:. A,B,C` are collinear


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