3 ms·
Because e == f, and if f is true then e is true, in which case f is false, hence a contradiction, hence it cannot be f.
by keerthiko 11y ago
Because e == f, and if f is true then e is true, in which case f is false, hence a contradiction, hence it cannot be f.
- addandsubtract 11y ago>Because e == f, and if f is true then e is true, in which case f is false e != f, because they produce different results. You could say e() == f(), each having the previous answer choices as arguments and each requiring them to be false. But since e() evaluates to true, f() can't be true.
- contravariant 11y agoA better way to phrase it would be that, f implies e, but e doesn't imply f. In fact e implies 'not f'.
- fao_ 11y agoAaaaah, I understand now. Thanks :3