(Choose 1 answer)
(See picture)
A. (i)
B. (iv)
C. (ii)
D. (iii)
Let x, y be integer numbers.
Choose the propositional function P(x, y) such that
Vx3y P(x, y) = F and 3x y P(x, y) = T.
(i) P(x, y) = "x2 + y2 = 5 "
(ii) P(x, y) = "x2 + y = 5"
(iii) P(x, y) = "x2 + y2 = -5"
(iv) P(x, y) = "x2 + y = -5"
E28
