For each of the transforms G(s). express the inverse transform, g(t) = L¯' {G(s)}, in terms of unit step functions; %3D • represent g(t) in the usual format for a piecewise function and sketch its graph. 4. 4. -2s 2n (b) G(s): = (s) ( s2 + n²/4 %3D

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Can you help me with question 3a in the pic? 

**3. For each of the transforms \( G(s) \):**

- Express the inverse transform, \( g(t) = \mathcal{L}^{-1} \{ G(s) \} \), in terms of unit step functions.
- Represent \( g(t) \) in the usual format for a piecewise function and sketch its graph.

**(a)** \( G(s) = \frac{4}{s^2} - \frac{4}{s^2 + 9} e^{-3s} \)

**(b)** \( G(s) = \frac{2\pi}{s^2 + \pi^2/4} e^{-5s} \)

**4. Use Laplace Transforms to solve the following initial value problem (IVP):**

\[ y''(t) + y(t) = f(t), \quad y(0) = 0, \, y'(0) = 0, \, f(t) = \left\{ \begin{array}{rl}
1, & 0 \leq t < \pi \\
-1, & \pi \leq t < 2\pi \\
0, & 2\pi \leq t
\end{array} \right. \]
Transcribed Image Text:**3. For each of the transforms \( G(s) \):** - Express the inverse transform, \( g(t) = \mathcal{L}^{-1} \{ G(s) \} \), in terms of unit step functions. - Represent \( g(t) \) in the usual format for a piecewise function and sketch its graph. **(a)** \( G(s) = \frac{4}{s^2} - \frac{4}{s^2 + 9} e^{-3s} \) **(b)** \( G(s) = \frac{2\pi}{s^2 + \pi^2/4} e^{-5s} \) **4. Use Laplace Transforms to solve the following initial value problem (IVP):** \[ y''(t) + y(t) = f(t), \quad y(0) = 0, \, y'(0) = 0, \, f(t) = \left\{ \begin{array}{rl} 1, & 0 \leq t < \pi \\ -1, & \pi \leq t < 2\pi \\ 0, & 2\pi \leq t \end{array} \right. \]
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