Consider the four first-order predicate formulas f = vx (-p(x, x) g = va vy vz (p(x, y) a p(y, z) + p(x, z)) g' = va vy vz (p(x, y) ^ ply, z) +-p(x, z)) h = vo vy (p(x, y) +-p(y, x)) a. show that fvg vg v h is not valid.

Ibelieve it would be c

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