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\begin{exerciseStatement}
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Compute the Laplace transform \(\mathcal{L}\{y\}\) of \(y = -2 \, \delta\left(t - 4\right) + 3 \, e^{\left(2 \, t\right)} + 2 \, \mathrm{u}\left(t - 5\right) \) by using a transform table.
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Then show how the integral definition of the Laplace transform to obtains same result.
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\end{exerciseStatement}
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\begin{exerciseAnswer}
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\[
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\mathcal{L}\{y\} = \frac{2 \, e^{\left(-5 \, s\right)}}{s} + \frac{3}{s - 2} - 2 \, e^{\left(-4 \, s\right)} \]
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\end{exerciseAnswer}
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