Solve the following pair of ODEs over the interval from t = 0 to 0.4 using a step size of...

Solve the following pair of ODEs over the interval from t = 0 to 0.4 using a step size of 0.1. The initial conditions are y(0) = 2 and z(0) = 4. Obtain your solution with (a) Euler’s method and (b) the fourth-order RK method. Display your results as a plot.