1.

For function f(x)=x"cos"(1)/(x),xge1,(2009)

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for atleast one x in INTERVAL `[1,oo),f(x+2)-f(x)lt2`
`lim_(xto0)f'(x)=1`
`[1,oo),f(x+2)-f(x)gt2`
f(x) is strictly decreasing in the interval `[1,oo)`

Answer :B::C::D


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