12.3.4 - Heaviside’s Expansion Formula (for distinct poles)
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Practice Questions
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Identify the poles of F(s) = (5s + 10) / (s^2 - 5s + 6).
💡 Hint: Set the denominator equal to zero and solve for 's'.
What does the term P(a_i) represent in Heaviside's formula?
💡 Hint: Think of it as the output of the polynomial when you substitute the pole.
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Interactive Quizzes
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What does Heaviside's Expansion Formula help calculate?
💡 Hint: Think about the function we retrieve from the frequency domain.
If F(s) = (3s + 4) / ((s - 1)(s - 2)), what are the poles?
💡 Hint: Factor the denominator to find the roots.
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Challenge Problems
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Using Heaviside's expansion, derive the inverse Laplace transform of F(s) = (2s + 3) / ((s - 1)(s - 2)^2). Consider both poles in your solution.
💡 Hint: Remember to account for the double pole by differentiating.
Explain why Heaviside's formula is not applicable to rational functions with non-distinct poles. Create an example to illustrate your point.
💡 Hint: Reflect on how distinct effects help simplify.
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