Question

For some positive constant C, a patient's temperature change T, due to a dose, D, of a drug is given by T= (C/2 - D/3)D^2. The sensitivity of the body to the drug is defined as dT/dD.
1.What dosage maximizes temperature change?
2.The sensitivity of the body to the drug id defined as dT/dD. What dosage maximizes sensitivity?