(1) Use the counterexample method to prove that the following symbolized arguments are invalid 1 (x)(Ax Bx) 2 (x)(Ax Cx) (x)(Cx Bx)

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(1) Use the counterexample method to prove that the following symbolized arguments are invalid  1  (x)(Ax  Bx) 2  (x)(Ax  Cx)   (x)(Cx  Bx)

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