Recent content by Rytif

  1. R

    Why is this truth table incorrect?

    Thank you for checking it. I went to talk to him again about it and he told me that the T/F values for P and Q were not in 'order', it's suppose to be: P | Q ------ T | T T | F F | F F | T He was actually quite angry and scribbled on my paper incoherently with T's and F's. I've never...
  2. R

    Why is this truth table incorrect?

    Homework Statement Create a truth table for ((P->Q) == (Q->P))Homework EquationsThe Attempt at a Solution http://www.freeimagehosting.net/newuploads/94ldj.pngI've had two quizes with problems just like this marked wrong in my college logic course. I confronted the professor about it and he...
  3. R

    Is This Propositional Logic Formulation Correct for Validating the Argument?

    1. Problem Directions: Using propositional logic, prove that each argument is valid. Use the statement letters shown. If the birds are flying south and the leaves are turning, then it must be fall. Fall brings cold weather. The leaves are turning but the weather is not cold. Therefore the...
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