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[" 28) If "f:[0,oo)rarr[0,oo)" and "f(x)...

[" 28) If "f:[0,oo)rarr[0,oo)" and "f(x)=(x)/(1+x)," then "f" is "],[" a)one one and onto "],[" b) one one but not onto "],[" c) onto but not one one "],[" d) neither one one nor onto "]

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