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Mathematics, 15.10.2019 01:00 carvajalj2520

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 contraposition
c.
proof by law of detachment
d.
proof by theorem

ansver
Answers: 1

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Given: p is true
prove: p → q is true
assume p and ~q are both true. ~q → r, and r → ~...
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