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== Consider the signal in Figure 1.11(a). It starts from = 0 and ends at = 2 and is said to have time duration 2. (a) Plot x(21). What is its time duration? (b) Plot x(0.51), What is its time duration? (c) Show that if a > 1, then the time duration of x(at) is smaller than that of x(t). This speeds up the signal and is called time compression. (d) Show that if 0 < a < 1, then the time duration of x(at) is larger than that of x(t). This slows down the signal and is called time expansion.

== Consider the signal in Figure 1.11(a). It starts from = 0 and ends at = 2 and is said to have time duration 2. (a) Plot x(21). What is its time duration? (b) Plot x(0.51), What is its time duration? (c) Show that if a > 1, then the time duration of x(at) is smaller than that of x(t). This speeds up the signal and is called time compression. (d) Show that if 0 < a < 1, then the time duration of x(at) is larger than that of x(t). This slows down the signal and is called time expansion.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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== Consider the signal in Figure 1.11(a). It starts from = 0 and ends at = 2 and is said to have time duration 2. (a) Plot x(21). What is its time duration? (b) Plot x(0.51), What is its time duration? (c) Show that if a > 1, then the time duration of x(at) is smaller than that of x(t). This speeds up the signal and is called time compression. (d) Show that if 0 < a < 1, then the time duration of x(at) is larger than that of x(t). This slows down the signal and is called time expansion.
Transcribed Image Text:== Consider the signal in Figure 1.11(a). It starts from = 0 and ends at = 2 and is said to have time duration 2. (a) Plot x(21). What is its time duration? (b) Plot x(0.51), What is its time duration? (c) Show that if a > 1, then the time duration of x(at) is smaller than that of x(t). This speeds up the signal and is called time compression. (d) Show that if 0 < a < 1, then the time duration of x(at) is larger than that of x(t). This slows down the signal and is called time expansion.
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