Unit II LOGICSection 3.7: Argument and Truth Tables<br />
What is an argument???<br />An argument consists of TWO parts!<br />Premises given statements<br />Conclusion decision r...
True or not…that is the QUESTION!<br />Valid Argument : If premises are true, the conclusion is true<br />Invalid Argument...
Testing the Validity of a Statement<br />Use TRUTH TABLES!!!<br />An argument is valid if the statement is a tautology (ba...
Types of Valid Arguments<br />
Types of Invalid Arguments<br />
Example :<br />1. <br />
SOLUTION Example :<br />1.		Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
SOLUTION Example :<br />1.		Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
SOLUTION Example :<br />1.		Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
SOLUTION Example :<br />1.		Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
SOLUTION Example :<br />1.		Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />Since the second row of the ...
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Dl wright -section 3.7

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Dl wright -section 3.7

  1. 1. Unit II LOGICSection 3.7: Argument and Truth Tables<br />
  2. 2. What is an argument???<br />An argument consists of TWO parts!<br />Premises given statements<br />Conclusion decision reached<br />
  3. 3. True or not…that is the QUESTION!<br />Valid Argument : If premises are true, the conclusion is true<br />Invalid Argument (fallacy): argument that isn’t true<br />
  4. 4. Testing the Validity of a Statement<br />Use TRUTH TABLES!!!<br />An argument is valid if the statement is a tautology (basically the last column of the truth table is true)<br />
  5. 5. Types of Valid Arguments<br />
  6. 6. Types of Invalid Arguments<br />
  7. 7. Example :<br />1. <br />
  8. 8. SOLUTION Example :<br />1. Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
  9. 9. SOLUTION Example :<br />1. Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
  10. 10. SOLUTION Example :<br />1. Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
  11. 11. SOLUTION Example :<br />1. Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />
  12. 12. SOLUTION Example :<br />1. Fallacy of inverse invalid <br />Solution using TRUTH TABLE:<br />Since the second row of the last column is FALSE, the statement is a fallacy, or INVALID <br />

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