Posted by kai on Tuesday, December 11, 2012 at 11:27am.
Determine whether the following argument is correct. If it's not correct, explain what is wrong with ther argument and change the minor premise to make a correct argument.
If a triangle is equilateral, then it has three equal sides. Triangle ABC doesn't have three equal sides. Therefore, triangle ABC isn't equilateral.

math  Knights, Tuesday, December 11, 2012 at 11:32am
this is a mixed hypothetical statement.
there are 4 forms, 2 are valid 2 are not.
let the antecedent of the first statement be t, and consequent be e.
~p = not p
thus we get
t } e
~e
:; ~t
This is modus tollens literally the way that denies by denying, which is a valid argument.

math  PsyDAG, Tuesday, December 11, 2012 at 11:39am
Sounds like a logical argument.
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