The question provided seems to be in Indonesian, and it appears to deal with logic, specifically propositional logic.

The question reads:

5. Diketahui bahwa nilai kebenaran dari $a \Rightarrow b$ adalah S (salah). Apakah yang dapat anda katakan tentang nilai kebenaran dari $\neg a \land b \iff a \lor b$?

Translation to English: 5. It is known that the truth value of $a \Rightarrow b$ is False. What can you say about the truth value of $\neg a \land b \iff a \lor b$?

Step-by-Step Solution:

1. Given Information: $a \Rightarrow b$ is False.

   • For an implication $a \Rightarrow b$ to be False, $a$ must be True and $b$ must be False. This is because the only case when an implication is False is when the first part (antecedent) is True and the second part (consequent) is False.

   Therefore, $a = \text{True}$ and $b = \text{False}$.

2. Expression to Evaluate: $\neg a \land b \iff a \lor b$.

   Let's break this down:

   • $\neg a$: The negation of $a$, so $\neg a = \text{False}$ (since $a = \text{True}$).
   • $b$: We already know $b = \text{False}$.
   • $\neg a \land b$: This is $\text{False} \land \text{False} = \text{False}$.
   • $a \lor b$: This is $\text{True} \lor \text{False} = \text{True}$.

   So, we now have: $\text{False} \iff \text{True}$.

3. Truth Value of $\iff$:

   • The biconditional $\iff$ (if and only if) is True when both sides have the same truth value.
   • In this case, $\text{False} \iff \text{True} = \text{False}$.

Conclusion:

The truth value of $\neg a \land b \iff a \lor b$ is False.

Do you need any further details or clarifications?

Here are 5 related questions to consider:

1. How do we determine the truth value of $a \Rightarrow b$ for different truth values of $a$ and $b$?
2. What is the meaning of $\land$ (AND) and $\lor$ (OR) in propositional logic?
3. How does the truth value of $\neg a \land b \iff a \lor b$ change when both $a$ and $b$ are False?
4. Can you explain the truth table for a biconditional $\iff$?
5. What are the possible truth values for more complex logical statements involving negation, conjunction, disjunction, and biconditional?

Tip:

When solving propositional logic problems, always begin by determining the truth values of individual components before evaluating the entire expression.