If \[f:[0,\ \infty )\to [0,\ \infty )\] and \[f(x)=\frac{x}{1+x},\]then f is [IIT Screening 2003]

If \[f:[0,\ \infty )\to [0,\ \infty )\] and \[f(x)=\frac{x}{1+x},\]the

1.	If \[f:[0,\ \infty )\to [0,\ \infty )\] and \[f(x)=\frac{x}{1+x},\]then f is [IIT Screening 2003]
A.	One-one and onto
B.	One-one but not onto
C.	Onto but not one-one
D.	Neither one-one nor onto
Answer» C. Onto but not one-one

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