Name ________________________   Logic Homework 5  Date ______________

5. For each of these arguments, prove it valid or invalid by truth table.	

1. 	Wa
	~Vb v  Wa
					premise	conclusion	
Wa	Vb		~Vb		Wa		~Vb v  Wa
  T	  T

  T	  F

  F	  T

  F	  F

2.	~Vc ^ Vd 
	~Vd 
						
Vc	Vd		~Vc		~Vc ^ Vd 		~Vd 

3. 	Vf v ~We
	We	
	Vf	
					
Vf	We		

4.	Tg v ~Wh
	Tg