The ANS:

Example 2.4 As a further example, consider the two sequences 0, otherwise and h[n] 0, otherwise These signals are depicted in Figure 2.8 for a positive value of a > 1. In order to calculate the convolution of the two signals, it is convenient to consider five separate intervals for n. This is illustrated in Figure 2.9. Example 2.4 As a further example, consider the two sequences 0, otherwise and h[n] 0, otherwise These signals are depicted in Figure 2.8 for a positive value of a > 1. In order to calculate the convolution of the two signals, it is convenient to consider five separate intervals for n. This is illustrated in Figure 2.9