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Suppose that F 1 F 2 . Check all that apply F 1 F ? 2 must be satisfiable. F 1 n o t F

Suppose that

F_{1} F_{2}.

Check all that apply

F_{1}^{F} ?_{2}

must be satisfiable.

F_{1}^{n} o t F_{2}

must be unsatisfiable.

F_{1} o r n o t F_{2}

must be valid.

n o t F_{2} = > n o t F_{1}

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