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

[" 99.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 "]]

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