. A body’s reaction to a dose of medicine can often be represented by an equation of the form R = M2 (C/2−M/3), where C is a pos
itive constant and M is the amount of medicine absorbed in the blood. If the reaction is a change in blood pressure, R is measured in millimeters of mercury. If the reaction is a change in temperature, R is measured in degrees, and so on. Find dR/dM
