I am editing my question regarding solving the model in order to be more specific.
Regarding the demand side, In the beginning of the model, we have a CES utility function over a continuum of goods
and we have this aggregate price:
How do we use them to get these two equations ? (this is my first question)
Regarding the production side, there is only one factor of production which is labor and it is in-elastically supplied, the cost function represents constant marginal costs and overhead cost. l = f +q/$\phi$.I understand that in order to get this pricing rule :
we should get the first order condition of the profit function, however I do not know where does the 1/$\rho$ came from ? (this is my second question)
I apologize if these questions seem silly but I do not have a theoretical background and I am trying to solve the model by myself.
Thanks in advance.