Math

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http://ocw.mit.edu/courses/mathematics/18-03-differential-equations-spring-2010/ A spring system responds to being shaken by oscillating. When the input frequency is near a natural mode of the system, the amplitude is large. This can be understood in the frequency domain using the Laplace transform and its pole diagram. (Image courtesy Hu Hohn and Prof. Haynes Miller.)

Differential Equations