Mathematics

Shiloh

24 July, 23:06

Given: p is true

Prove: p _ q is true

Assume p and ~q are both true. ~q _ r, and r _ ~p. Therefore, ~p and p cannot be true, so p and ~q cannot be true. Therefore, p _ q is true.

What type of proof is illustrated above?

A. proof by contradiction

B. proof by law of detachment

C. proof by theorem

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