Question: Question 2 ( 3 0 points ) : Consider the Double - Satisfiability ( DOUBLE - SAT ) decision problem given below: Instance: Boolean formula

Question 2(30 points): Consider the Double-Satisfiability (DOUBLE-SAT) decision problem given
below:
Instance: Boolean formula f in CNF form.
Question: Does f have at least two satisfying truth assignments?
Prove that DOUBLE-SAT is NP-complete (Hint reduce SAT to DOUBLE-SAT)
Question 2(30 points): Consider the Double-Satisfiability (DOUBLE-SAT) decision problem given below:

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