1.

Energy density spectrum of x[n] = an [n] for -1 < a < + 1 is

A. <img src="/_files/images/electronics-and-communication-engineering/signals-and-systems/18-293-1.png">
B. <img src="/_files/images/electronics-and-communication-engineering/signals-and-systems/18-293-2.png">
C. <img src="/_files/images/electronics-and-communication-engineering/signals-and-systems/18-293-3.png">
D. <img src="/_files/images/electronics-and-communication-engineering/signals-and-systems/18-293-4.png">
Answer» D. <img src="/_files/images/electronics-and-communication-engineering/signals-and-systems/18-293-4.png">


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