[" The vectors a and b are non-collinear...

[" The vectors a and b are non-collinear."],[" The value of "x" for which the vectors "],[(bar(c)=(x-2)bar(a)+bar(b))/(" collinear,is ")" and "bar(d)=(2x+1)bar(a)-bar(b)" are "],[[" (A) "1," (B) "(1)/(2)],[" (C) "(1)/(3)," (D) "3]]

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