Sir firstly, if all i need to find is conditions under
which excess demand is 0 in different situations, then what is the differnce between the questions...find positive equilibrium and find "unique" positive equilibrium?? Sir in this context please give your answer for question 4 where u chose None of the above, and please explain how you got the conditions for question 5. ( Here why Beta 2 has to be positive sir?)
The first order linear differntial equation I got is.. dP/dT - B2P = B1 (B2= Beta 2 , B1 = Beta1)
So sir to solve this differntial equation, is it not that B2 should always be negative ??