The inverse market demand curve under collusion will be P = 1000 - Q.
It should be noted that the demand curve simply shows the amount if goods and services that van be bought at a a particular price and at a given period of time.
From the information given, it was stated that the inverse market demand is: p = 1,000 - (q1 q2) and that the costs for each firm are identical and given by: ciqi = 4qi under collusion.
Therefore, the inverse market demand curve under collusion based on the information given will be P = 1000 - Q
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