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Use the truth-tree decision procedure, determine whether ( x ) Px ( x )( Px Qx ) . Answer this question in terms of whether
Use the truth-tree decision procedure, determine whether (x)Px(x)(PxQx) . Answer this question in terms of whether the argument that corresponds to this entailment is valid or invalid.
Inconsistent?
Invalid
Consistent
Valid
Undecideable?
Use the truth-tree decision procedure, determine whether (x)(Px(QxRx))(x)(Qx(PxRx)) Answer this question in terms of whether the argument that corresponds to this entailment is valid or invalid.
Inconsistent?
Invalid
Consistent
Valid
Undecideable?
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