down!

#feedback

curriculum states:

How to negate a disjunction

First, we "flip and negate:"

M → /(/N or /O)

That's a lot of /'s but don't worry, remember that negations cancel out. To distribute the / into the parenthesis, obey De Morgan: to negate a disjunction, swap the "or" (disjunction) for an "and" (conjunction) and negate each of the disjuncts:

N and O

Put it together:

M → N and O

Thank you Augustus De Morgan and may you rest in peace."

HOWEVER WOULDN'T IT BE: N AND O --> /M ... seems as if they forgot to fully finish negating and entirely did not flip