Let f: B → C and g: A → B be two functions and let h = f ∘ g. Given that h is…
2005
Let f: B → C and g: A → B be two functions and let h = f ∘ g. Given that h is an onto function. Which one of the following is TRUE?
- A.
f and g should both be onto functions
- B.
f should be onto but g need not be onto
- C.
g should be onto but f need not be onto
- D.
both f and g need not be onto
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Correct answer: B
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