Question: According to (3.5), for Q* to be positive, it is necessary that the expression (ad-bc) have the same algebraic sign as (b+d). verify that this

According to (3.5), for Q* to be positive, it is necessary that the expression (ad-bc) have the same algebraic sign as (b+d). verify that this condition is indeed satisfied in the models of probs. 1and 2.

(a) Qd51-3P Q6P-10 (b) Qd = 30-2P Q = -6+5P

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