A patient's temperature change, T, due to a dose, D, of a drug is given by the following equation where C is a positive constant. Use upper case letters. T=\left(\frac{C}{2}-\frac{D}{3}\right)

D^{2} \text { (a) Find } \frac{d T}{d D}= (b) What dosage maximizes the temperature change? D = ________. (c) If the sensitivity of the body to the drug is defined by dT/dD, what dosage maximizes sensitivity? D = _______.