Hello everyone, I can't seem to understand how to do this question.
Determine whether the formula F: ∃x∀y(P(x) → x = y) is true or false under each of the following interpretations over the domain D = {a, b}.
(i) both P(a) and P(b) are true;
(ii) both P(a) and P(b) are false;
(iii) P(a) is...