Question

2. Determine if the following argument is valid or not. Premises: (1) If the engine works, then the control light is on, provided that the battery is not dead. (2) If the battery is dead, then the engine does not work. (3) If the control light is on, then the engine works. Conclusion: If the battery is not dead, then the engine works and the control light is on. If the argument is valid, then provide a deductive proof. If it is not, use the truth table method to point out the flaw.

Answer 1

) (En ~B) NC B NE C->E 3) 4 NB-) (End) (EnnB) NC NCERNB) UNC NE VB UNC BV (NEVNO NB > CENC) Valid
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