Question

Identify the error or erors in this argument that supposedly shows that if xA) A 3xG is true, then 3A)A G) is true. 18 1. 3XAA x 2. 3xA 3. Rd 4. 3xC 5. ad 6. AdA aa 7. 3MAMA Q) Premise Simplification from (1) Existential instantiation from (2) Simplification from (1) Existential instantiation from (4) 011748 Conjunction from (3) and (5) Existential generalization Multiple Choice The error is in step 5, we cannot assume that the cthat makes Ptrue and the cthat makes Qtrue are the same. The error is in step 4, we cannot conclude that 3xQ is true from 3xR A 3xQd The error is in step 7, we cannot assume that aA AGAI when AOAQdis true. The error is in step 3, we cannot conclude that the value of xthat makes 3xRtrue is c

Answer 1

The error in the step 5, we can not assume that the e that make p time and the c that makes Q true are the same Converse: there is going to be class wherever i come to clam Inverse: I do not come to wherever there in not going to be a Contrapositive: There is not going to be a whenever I