determine whether the given argument is valid or invalid. If it is valid, derive the conclusion using our rules of inference and equivalence. If it is invalid, provide a counterexample.
-1. (∀x)(Ax ⊃ Dex)
2. (∃x)(Bx • Dxe)
3. (∀x)(Bx ⊃ Ax) / (∃x)[Ax • (Dxe • Dex)]

Question

Quizplus · Accepted Answer

The Answer of determine whether the given argument is valid or invalid. If it is valid, derive the conclusion using our rules of inference and equivalence. If it is invalid, provide a counterexample.
-1. (∀x)(Ax ⊃ Dex)
2. (∃x)(Bx • Dxe)
3. (∀x)(Bx ⊃ Ax) / (∃x)[Ax • (Dxe • Dex)]

Determine Whether the Given Argument Is Valid or Invalid