(Solved): the positicas of the jurmise ( A in our rxample) and conclusion (B). So the coeverse of AB is B ...

the positicas of the jurmise ( $A$ in our rxample) and conclusion (B). So the coeverse of $A?B$ is $B?A$ conclasion end replacing thrm with thrir moatices. So the comtraponitive of $A?B$ in $\neg B?\neg A$ ofiginal $(A?B=\neg B?\neg A)$. doon for $\neg B?\neg A$. 6. Clack whether earh argumicut is vabid or not, athd justify your anowit with a trath ascigameat of truth tabk as aspecsiate. $\neg (A?B)$ (a) $\frac{\neg A}{\neg (B?A)}$ (b) $\frac{x?y}{\neg Y?X}$ $P??Q$ (c) $\frac{\neg Q}{\neg \neg P}$ (1) $\frac{P}{Q}$ why not. Pave 2 (a) A satiodialke formala that is not a tantobogs (b) A satisfiable formmla that is abo a tautologs: (c) A coutingoney that is also a coitratiction (d) A formula that is bogirally equavaleat to $A+4$. (f) A consistent set formalse that includes the formula $P?\neg Q$. (Thene have to be at knat two formulas is your wt.) (h) A cotsistent wit of formalas where anr of the formulas is a contralintien. sally answers.) Write your asswer in the form: "po and $q=$ argament $\frac{p}{q}$ is invalid Write your answer in the form: " $p=$ and $\mathrm{g}=$