Exercise · ZW-FUNCTION-006 · ★★☆ Intermediate
A function is injective if...
Choose one option.
Show answer
- C. Different inputs have different outputs
Explanation
f is injective if different inputs always produce different outputs: f(x) = f(y) implies x = y. Every output having an input is surjectivity.
Review the concept: Function
A function f from A to B assigns to each element of A exactly one element of B. A is the domain and B the codomain.
\[f:A\to B\]
More practice problems: function
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