derive expression forthe stirred tank

2. Two identical volume of stirred tanks connected in series on same level is used to develop a gradient concentration in the outflow of tank 2. Initially, the concentration in tank 1 is same as tank 2 . The constant flow rates were well maintained between the stirred tanks, by using a pump with a pumping rate of q. At time zero, the inlet flow concentration (Ci) is increased with a magnitude of M. a) Please derive the transfer function between the outlet concentration and inlet concentration; G(s)=C2/Ci b) what is the response behavior of tank 2 concentration