JEE Main 2022 Mathematics question
Let A, B, C be three points whose position vectors respectively are , , R, . If is the smallest positive integer for which , , are non collinear, then the length of the median, in , through A is:
Answer: (1)
Solution
, , 1) and , −6, 2) are parallel when ( − 4)/(−6) = 1/2, i.e. . So the points are collinear for , and the smallest positive integer for
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