Question

Let $f: \R → \R$ be defined by $f(x) = x^2$, for every $x∈\R$. Then $f$ is:

• A. one-one and onto
• B. one-one and not onto
• C. neither one-one nor onto
• D. onto and not one-one

Answer 1

Answer: (C)

neither one-one nor onto

Answer 2

The correct option is(C):neither one-one nor onto