f(t) = cos(2t). Find F(s)
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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Transcribed Image Text:## Problem 1: Functions and Transformations
**Objective:** Find the functions from Table 6.2.1.
**a.** Given the function \( f(t) = \cos(2t) \), find \( F(s) \).
**b.** For the function \( g(t) = e^{2t} \sin(3t) \), determine \( G(s) \).
**c.** Consider \( H(s) = \frac{3s + 1}{s^2 - 2s + 5} \). Find the corresponding \( h(t) \).
**Explanation:**
- **(a)** involves the cosine function, which is commonly associated with Laplace transforms.
- **(b)** combines an exponential and sine function, implying a transformation using complex exponentials.
- **(c)** shows a rational function in \( s \), which typically involves partial fraction decomposition to revert to time domain.
These problems focus on applying standard transformations to expressions in \( t \) and \( s \), often using Laplace transform tables.
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