Question

Let f: [0,∞) → $\R$ be a function defined by $f(x)=\frac{x+1}{x+2}$ for all $x\isin\R$. 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.

Answer 1

Answer: (B)

one-one but not onto.

Answer 2

The correct option is (B): one-one but not onto.