1. **State the problem:** We want to find the negation of the logical expression $$\neg (x \wedge \forall y (ny = 1))$$.
2. **Recall the rules:** The negation of a conjunction $$\neg (A \wedge B)$$ is equivalent to $$\neg A \vee \neg B$$ (De Morgan's Law).
3. **Apply De Morgan's Law:**
$$\neg (x \wedge \forall y (ny = 1)) = \neg x \vee \neg \forall y (ny = 1)$$
4. **Negate the universal quantifier:**
The negation of $$\forall y (ny = 1)$$ is $$\exists y \neg (ny = 1)$$.
5. **Rewrite the expression:**
$$\neg x \vee \exists y (ny \neq 1)$$
6. **Interpretation:**
The negation means "either $$x$$ is false, or there exists some $$y$$ such that $$ny$$ is not equal to 1."
Negation Logic 39A5D3
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