#Some proof with sets
6 messages · Page 1 of 1 (latest)
i cant understand either.
the way that to prove this using this method is by using 2 cases but not in that way:
- show that if x is an element of B then its also an element of C
2.show that if x in not an element of B then its also not an element of C
i think the second case was supposed to be B not A
.solved