Inverse Laplace Transform of (1/(s+s^3))?

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SUMMARY

The inverse Laplace transform of the function (1/(s+s^3)) is definitively 1 - cos(t). The solution can be derived using partial fraction decomposition, which simplifies the expression effectively. Initial attempts to solve the problem using a Laplace transform chart were unproductive, but revisiting the partial fractions method proved successful. This discussion highlights the importance of correctly applying mathematical techniques in solving inverse Laplace transforms.

PREREQUISITES
  • Understanding of Laplace transforms
  • Familiarity with inverse Laplace transform techniques
  • Knowledge of partial fraction decomposition
  • Basic calculus concepts related to trigonometric functions
NEXT STEPS
  • Study the method of partial fraction decomposition in detail
  • Learn about the properties of Laplace transforms
  • Explore advanced applications of inverse Laplace transforms
  • Review trigonometric identities and their relevance in Laplace transforms
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Students studying differential equations, mathematicians working with Laplace transforms, and educators teaching advanced calculus concepts.

rAInMo9
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Homework Statement



What is the inverse laplace transform of (1/(s+s^3))?

Homework Equations



The Attempt at a Solution



I looked it up on wolframalpha and got 1-cos(t), but I don't understand how they got that answer. I looked up a basic laplace transform chart and didn't see anything that matched; also thought of using partial fractions to simplify it but that didn't work out.
 
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rAInMo9 said:

Homework Statement



What is the inverse laplace transform of (1/(s+s^3))?

Homework Equations



The Attempt at a Solution



I looked it up on wolframalpha and got 1-cos(t), but I don't understand how they got that answer. I looked up a basic laplace transform chart and didn't see anything that matched; also thought of using partial fractions to simplify it but that didn't work out.

I think you should try partial fractions again. It works out pretty easily that way. Show us what you did.
 
Last edited:
Haha...I just realized I did my partial fraction decomposition wrong the first time -______- So mad...Thanks for the help!
 

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