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[" 25.If "vec alpha=(lambda-2)vec a+vec b" and "vec beta=(4 lambda-2)vec a+3bar(b)" be "],[" two given vectors where vectors "vec a" and "vec b" are "],[" non-collinear.The value of "lambda" for which "],[" vectors "vec alpha" and "vec beta" are collinear is "],[qquad " [Mains "2019" Online] "]

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