Problem 1: The nonlinear model of the Skydiver is given by: dv dt = 9 m The exact solution of the expression is gm gc v(t) = tanh m where g = 9.81 m/s, c = 0.25 kg/s, t = 4s, and v = 36 m/s. Use the Trial and Error Method to find the best optimal mass so the skydiver does not sustain vertebrae injuries. Write a MATLAB code to plot the mass vs. function. Extract 7 different values of the mass to verify that the function is close to zero, and that the velocity equation is close to 36 m/s. Show your work by hand.