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EX: Find the Z. T. of X(X) = cas wok u(k) 8 iwok -iwok Sol:- X(Z) = - IN Σ coswok. Z k=o == {(² z ¹² k=o 2 -k -iwo wo ie² = ¹)² + ε ( 2². z ¹)^ ] k=o [] + i Wo 1 - - Z -1 -iwas 2 1-Z¹ (1+0) - 2² Z Ele (e te 2 k=o 2 Z-Z ces Wo हे? i Wo e te -2Z COSWO +1 Z

EX: Find the Z. T. of X(X) = cas wok u(k) 8 iwok -iwok Sol:- X(Z) = - IN Σ coswok. Z k=o == {(² z ¹² k=o 2 -k -iwo wo ie² = ¹)² + ε ( 2². z ¹)^ ] k=o [] + i Wo 1 - - Z -1 -iwas 2 1-Z¹ (1+0) - 2² Z Ele (e te 2 k=o 2 Z-Z ces Wo हे? i Wo e te -2Z COSWO +1 Z

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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EX: Find the Z. T. of X(K) = caswak u(k) ∞ iwok -iwok ∞ -k ~Sels- X(Z) = { coswok. Zk = < (² + e) zk 2 K=o k=o = Wo - iWo - + [2( ²² 2¹² +2 (²².²)*] 2 1 11 - 1 2 [] i Wo. iWo z' ('evo + wo ei was 2 2 Z 2 2- 1-Z' (w e 1 Z ces Wo -IW. -1 + (wo) - Z² - 2Z COSWo + 1 How did he get the value inside the circle
Transcribed Image Text:EX: Find the Z. T. of X(K) = caswak u(k) ∞ iwok -iwok ∞ -k ~Sels- X(Z) = { coswok. Zk = < (² + e) zk 2 K=o k=o = Wo - iWo - + [2( ²² 2¹² +2 (²².²)*] 2 1 11 - 1 2 [] i Wo. iWo z' ('evo + wo ei was 2 2 Z 2 2- 1-Z' (w e 1 Z ces Wo -IW. -1 + (wo) - Z² - 2Z COSWo + 1 How did he get the value inside the circle
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