Use dsolve to obtain the solution of y" + y′ + 144y = cos 2t, y(0) = 0, y′ (0) = 0. Use ezplot to plot the solution on the time interval [0,6π], Use ode45 to find a numerical solution on the same time interval and superimpose that plot of the first plot. How closely does the numerical solution match the symbolic solution?
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