What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: u_1 <-> q_1. q_10. ~u_1.
q_10 and ~u_1 can be inferred via the conjunction rule. ~u_1 and q_10 can be inferred via the conjunction rule. u_1 -> q_1 can be inferred via the biconditional elimination rule. q_1 -> u_1 can be inferred via the biconditional elimination rule. ~q_1 can be inferred via the biconditional elimination rule.