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8.4 due November 30

I don't quite understand Figure 8.4.3. It looks like the blue signal is the same on the two pictures but the red is different, but the caption says it should be the other way. I'm guessing the caption is wrong?

This section wasn't too bad because I had done the Discrete Fourier Series lab today. So it helped the lab make more sense. So I don't have anything to add.

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