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The next signal operation we investigate is signal addition. Consider the discrete-time signals x1[k] and x2[k] c. The discrete-time signal y[k] = x1[k] + x2[k] is the addition of the two signal and is created by adding the two signals at each point in time k.

This video shows an several examples of performing signal addition. One uses a "graphical approach" while the second example uses a "table approach" to create the final signal.

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