Exercise · ZW-LOGICAL-OPERATOR-004 · ★☆☆ Basic
Which expression uses a unary operator?
Choose one option.
Show answer
- A. ¬P
Explanation
Negation \(\neg P\) is unary because it takes one proposition. The other three expressions take two propositions.
Review the concept: Logical operator
A logical operator \(L\) is a function that, for some integer \(n\geq 1\), takes \(n\) propositions and produces a proposition.
\[L:\{\top,\bot\}^{n}\to\{\top,\bot\}\]
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