7.3.1 Validity, 7.3.1.1 Exercises
This video shows you how to use truth trees to check an argument for validity.
For this video: Read 7.3.1 Validity; Do 7.3.1.1 Exercises (pp. 147-150)
For next video: Read 7.3.2 Satisfiability; Do 7.3.2.1 Exercises (p. 151)
“Logic: The Laws of Truth” Nicholas J. J. Smith https://amzn.to/2T2HlnF
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