System Dynamics 3rd Edition

Published by McGraw-Hill Education
ISBN 10: 0073398063
ISBN 13: 978-0-07339-806-8

Chapter 2 - Problems - Page 110: 2.10

Answer

(a) $$x(0+)=\lim _{s \rightarrow \infty} s \frac{5}{3 s+7}=\frac{5}{3}$$ $$x(\infty)=\lim _{s \rightarrow 0} s \frac{5}{3 s+7}=0$$ (b) $$x(0+)=\lim _{s \rightarrow \infty} s \frac{10}{3 s^{2}+7 s+4}=0$$ $$x(\infty)=\lim _{s \rightarrow 0} s \frac{10}{3 s^{2}+7 s+4}=0$$

Work Step by Step

(a) $$x(0+)=\lim _{s \rightarrow \infty} s \frac{5}{3 s+7}=\frac{5}{3}$$ $$x(\infty)=\lim _{s \rightarrow 0} s \frac{5}{3 s+7}=0$$ (b) $$x(0+)=\lim _{s \rightarrow \infty} s \frac{10}{3 s^{2}+7 s+4}=0$$ $$x(\infty)=\lim _{s \rightarrow 0} s \frac{10}{3 s^{2}+7 s+4}=0$$
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