- #1
Panphobia
- 435
- 13
Homework Statement
So if a question asks you for a pair set, with some criteria, is it enough to just say S = {a,b} or do you need something extra? Also this is another question that is from my set theory class, if the question defines a function and to solve over the Real numbers, ex. 1-|x^2-1| = 0, I know it isn't as simple as it looks, I know we are supposed to give all the values of x satisfying this function in a set, but I think our professor is looking for some kind of proof, like using, "if a = b then |a| = |b|". So my question is, how do I integrate those if statements while solving for all values of x?