Solutions to Constructing proofs of arguments in QL

Proof 1

 

1. (x)(Ax Bx) premise  
2. (x)Ax premise  
3. flag a Flagged subproof for U.G. SP1
4. Aa Ba U.I., 1 SP1
5. Aa U.I., 2 SP1
6. Ba M.P. 4,5 SP1
7. (x)Bx U.G., 3-6