Question: (4) Use the counterexample method to prove that the following symbolized arguments are invalid. 1. (x)(Ax Bx) 2. (x)(Ax Cx) / (x)[Ax

(4) Use the counterexample method to prove that the following symbolized arguments are invalid.

1. (∃x)(Ax • Bx)
2. (∃x)(Ax • Cx) / (∃x)[Ax • (Bx • Cx)]

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