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[" Let "f:R rarr R" be a positive increa...

[" Let "f:R rarr R" be a positive increasing function with "lim_(x rarr x)(f(3x))/(f(x))=1" .Then "x rarr oo(f(2x))/(f(x))=0" ."],[[" (A) "1," (B) "(2)/(3)," (C) "(3)/(2)," (D) "3],[lim_(x rarr2)((sqrt(1-cos{2(x-2)}))/(x-2)),]]

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