Inverse Laplace Transformation

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SUMMARY

The forum discussion centers on solving the inverse Laplace transformation of the function $$\mathscr{L}_s^{-1} \left\{ \frac{s}{s^2-s+\frac{17}{4}} \right\}$$. The correct solution is identified as $$f(t) = (1/4)e^{t/2}(\sin(2t) + 4\cos(2t))$$. Participants emphasize the importance of breaking down the function into more recognizable Laplace transforms and suggest completing the square in the denominator as a starting point for the solution.

PREREQUISITES
  • Understanding of Laplace transforms and their properties
  • Familiarity with completing the square in algebra
  • Knowledge of trigonometric functions and their relationships
  • Experience with mathematical notation and transformations
NEXT STEPS
  • Study the Table of Laplace Transforms for common functions
  • Learn techniques for completing the square in polynomial expressions
  • Explore the derivation of inverse Laplace transforms
  • Practice solving differential equations using Laplace transforms
USEFUL FOR

Students studying differential equations, mathematicians focusing on transform methods, and educators teaching Laplace transform techniques.

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Homework Statement



Solve the following:

$$\mathscr{L}_s^{-1} \left\{ \frac{s}{s^2-s+\frac{17}{4}} \right\}$$

Homework Equations



Table of Laplace Transforms.

The Attempt at a Solution



The solution is
$$f(t) = (1/4 )e^{t/2} (\sin(2 t)+4 \cos(2 t))$$

I know I need to break up ##F(s)## into more common Laplace transforms, but I'm not quite sure how to begin.
 
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END said:

Homework Statement



Solve the following:

$$\mathscr{L}_s^{-1} \left\{ \frac{s}{s^2-s+\frac{17}{4}} \right\}$$

Homework Equations



Table of Laplace Transforms.

The Attempt at a Solution



The solution is
$$f(t) = (1/4 )e^{t/2} (\sin(2 t)+4 \cos(2 t))$$

I know I need to break up ##F(s)## into more common Laplace transforms, but I'm not quite sure how to begin.

Hint: Begin by completing the square in the denominator.
 

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