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This lecture describes what it means when we say a system is linear and time invariant. I also try to give an example as to why these systems are so important when designing control systems. I will be loading a new video each week and welcome suggestions for new topics. Please leave a comment or question below and I will do my best to address it. Thanks for watching!

Errata!
6:56 - I accidentally stated the non-linear region of the spring was the *elastic* deformation but it is really the *plastic* deformation.

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