Question: 6. Identify bound and free variables in the first-order logic formula: Vxy A(x, y) V 3y B(x, y) Occurrence of x in A(x, y):

6. Identify bound and free variables in the first-order logic formula: Vxy

6. Identify bound and free variables in the first-order logic formula: Vxy A(x, y) V 3y B(x, y) Occurrence of x in A(x, y): Occurrence of y in A(x, y): Occurrence of x in B(x, y): Occurrence of y in B(x, y): 7. Are the first-order logic formulas Vxy A(x, y) and yx A(x, y) logically equivalent? Why? 8. Is the first-order logic formula Vx A(x) 3x A(x) valid, satisfiable, or unsatisfiable? Why?

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