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1. Please provide a natural deduction proof for the following valid, deductive argument: Premise 1: ~ ( F & A ) Premise 2: ~ ( L v ~ A ) Premise 3: D > ( F v L ) / ~ D 2. Answer the following q...

1. Please provide a natural deduction proof for the following valid, deductive argument: Premise

1: ~ ( F & A ) Premise

2: ~ ( L v ~ A ) Premise

3: D > ( F v L ) / ~ D 2.

Answer the following question: can one prove invalidity with the natural deduction proof method?

Why or why not?

3. Answer the following question: can one construct a natural deduction proof for an invalid argument in SL? Why or why not?

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Answer #1

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1. Please provide a natural deduction proof for the following valid, deductive argument: Premise 1: ~ ( F & A ) Premise 2: ~ ( L v ~ A ) Premise 3: D > ( F v L ) / ~ D 2. Answer the following q...
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