Solve any one from these TWO Step by step answer please Only hand written accepted

Q2. Develop a mathematical model for a simple gravity flow tank into which an incom- pressible liquid is pumped at a variable flow rate of F. (m/s). This inflow rate can vary with time because of changes in operations upstream. The height of the liquid in the vertical cylindrical tank is h (m). The flow rate out of the tank is F (m/s). Discuss the Newton-Raphson algorithm for solving the modeled equations. OR Formulate the model equations for three isothermal variable holdup CSTR's connected in series and also write the computer program to carry out the simulation