In the Bertrand model of this section, show that if c 1 = c 2 = c, then ( p ∗ 1 , p ∗ 2…

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In the Bertrand model of this section, show that if c1 = c2 = c, then ( p∗ 1 , p∗ 2 ) = (c,c) is a Nash equilibrium but each firm makes zero profit