(ππ +1)π₯π΅β²(π )π₯πΉπ΅π πΉβ²(π )βπ₯π΅π πΉπ΅π πΉπ΅β²(π )where πππ΅π has been defined as a parameter.The feedforward controller will be adjusting the product flow rate πΉπ΅β²to maintain the product concentration at the setpoint value π₯π΅π πβ², hence the above becomes:(ππ +1)π₯π΅π πβ²(π )π₯πΉπ΅π πΉβ²(π )βπ₯π΅π πΉπ΅π πΉπ΅β²(π )π₯π΅π πΉπ΅π πΉπ΅β²(π )π₯πΉπ΅π πΉβ²(π )β(ππ +1)π₯π΅π πβ²(π )πΉπ΅β²(π )π₯π₯π΅π [πΉβ²(π )βπΉπ΅π π₯(ππ +1)π₯π΅π πβ²(π )]Therefore, the feedforward controller adjusts the product flow rate πΉπ΅β²(π‘)as a function of the measured feed flow rate πΉ(π‘)(disturbance). The main disadvantage of this control scheme is that it assumes that the feed composition π₯is constant, and this might not be the case in practice.Also, since this design equation has been developed through a linearized approximation of a non-linear balance it will be performing well only close to the operating point.Problem 2.Consider the furnace below. The aim of the process is to heat the process fluid by burning a fuel. Describe one conventional feedback control loop and one cascade control loop for this process, stating, in general terms, the advantages and disadvantages of cascade control compared to conventional feedback control, referring to this example