This is an example of an undamped forced oscillation where the phenomenon of beats occurs. find the solution of the initial value problem: x" + 7.84x = 2 cos(3), x(0) = x' (o) = 0 x(t) = graph the solution to confirm the phenomenon of beats. note that you may have to use a large window in order to see more than one beat. what is the length of each beat? length = ! would you be able to explain why the beats phenomenon occurs for this particular example?