(Choose 1 answer)
(See picture)
A. (i)
B. (iv)
C. (iii)
D. (ii)
Let x, y be integer numbers.
Choose the propositional function P(x, y) such that
Vx3y P(x, y) = T and y ∀x P(x, y) = T
(i) P(x, y) = "x+y=0"
(ii) P(x, y) = "x+y=-x-y"
(iii) P(x, y) = "x + y = x-y"
(iv) P(x, y) = "x = y"
E15
