Question

What type of proof is illustrated above?

Answer 1

Given: p is true

Prove: p → q is true

Assume ~q is true. Then ~q → r, and r → s. Since s → ~p, ~q → ~p by the law of syllogism. Therefore, p → q is true.

Answer 2

A.


proof by contradiction




B.


proof by contraposition




C.


proof by law of detachment




D.


proof by law of syllogism

Answer 3

those anybody no how to do this expressions?