Question: Determine if each expression is satisfiable or unsatisfiable. If it is, give values for the variables that satisfy it. If not, explain why it is

Determine if each expression is satisfiable or unsatisfiable. If it is, give values for the variables that satisfy it. If not, explain why it is not satisfiable.

a. (p ∨ q ∨ ¬r) ∧ (p ∨ ¬q ∨ ¬s) ∧ (¬p ∨ r)

b. p ∧ (¬p ∨ r) ∧ ¬r ∧ (¬p ∨ ¬r ∨ q)

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