It's quite tough and hard actually, but if you commit I'm sure you can get along with it, and don't worry they'll give you a lot of exercise to make sure that you've already understood the concepts.
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已于 Jan 2, 2023审阅
The course is pretty good. One problem is that the answers in some questions are wrong and autograder hasn't fixed that.
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已于 May 17, 2020审阅
The Second Week concept (i.e) the Frequency response concept can be even more taken briefly for more and better understanding.