Question: Modal Logic. Using the tree method test the following arguments for validity in $5. a. p> q therefore p => q b. O(p = q),

Modal Logic. Using the tree method test the following arguments for validity in $5. a. p> q therefore p => q b. O(p = q), ~q therefore 0~p C. (p v q) therefore O~p = 0q For any that are invalid, give a countermodel

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