6. Which of these 2 systems is memoryless and which one has memory? Briefly explain why. а) Уi(t) %3 5x(t) y2(t) = x(t + 5) b) y[n] = (x[n] + x[n – 1] + x[n – 2]) y[n] = x?[n]

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A: Solution:

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A: Given:

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