Question: Consider the following algorithm for checking satisfiability: Put the formula into disjunctive normal form and then check to see if all of the disjuncts

Consider the following algorithm for checking satisfiability: Put the formula into disjunctive normal form and then check to see if all of the disjuncts are contradictions (containing both a variable and its complement). If not, then it is satisfiable. Why is this algorithm exponentially costly?

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