Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

~(~~~q || r) || ~(~~~q || r) || q || r

⇒ logic.propositional.notnot

~(~q || r) || ~(~~~q || r) || q || r

⇒ logic.propositional.demorganor

(~~q /\ ~r) || ~(~~~q || r) || q || r

⇒ logic.propositional.notnot

(q /\ ~r) || ~(~~~q || r) || q || r