Let f : R → R be defined by f(x) = eˣ. The function is:
Let f : R → R be defined by f(x) = eˣ. The function 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: B) one-one but not onto
Explanation: f(x) = eˣ is strictly increasing → one-one. Range is (0, ∞) ≠ R → not onto.
0 Answers
Log in to post your own answer or join the discussion.
No comments yet — start the discussion.