Question: Show that the following sentences are invalid. a) Vx 3y Q(x.y)3xVy Q(x.y) b) (VxQ(x, x) & Vx Vy(Q(x.y) Q(y, x)))Vx Vy Vz((Q(x, y) &

Show that the following sentences are invalid. a) Vx 3y Q(x.y)3xVy Q(x.y) 

Show that the following sentences are invalid. a) Vx 3y Q(x.y)3xVy Q(x.y) b) (VxQ(x, x) & Vx Vy(Q(x.y) Q(y, x)))Vx Vy Vz((Q(x, y) & Qty, z)) Q(x.z))

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