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Convolve graphically the below given signals, and determine the correct sequence?

Convolve graphically the below given signals, and determine the correct sequence? Correct Answer Y (-1) = 0, y (1) = 2, y (3) = 2

Step 1: sketch x (τ) and h (-τ) Step 2: Obtain the product x (τ) h (t-τ) and the area under this product will give y (0) Step 3: sketch h (1-τ) and compute y (1) and so on Step 4: similarly sketch h (-1-τ) and compute y (-1) and so on. By following above steps we get the output as

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