Problem 3: Consider a second-order ODE representing a forced vibrating system: y+8y+2y=kcos(x)y(0)=0,y(0)=1 a. Use MATLAB in order to obtain the analytical solution y(t) for the above differential equation (obtain solution in terms of variable k, and must be displayed in decimal format). b. Consider the solution y(t) for the above ODE, as obtained in Part (a). On a single graph, plot the solution y(t), for two different values of the variable ' k ': k=3 and k=15. Use a time range t of 0