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in Relations and Functions by (47.9k points)

Which of the following is onto function—

(A) f : Z → Z, f(x) = |x|

(B) f : N → Z, f(x) = |x|

(C) f : R0 → R+, f(x) = |x|

(D) f : C → R, f(x) = |x|

1 Answer

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by (46.2k points)
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Best answer

Answer is (C)

f : R0 → R+, f(x) = |x|

Pre-image of every positive real number is exists in domain R0

So, function is onto.

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