Laplace transform of an ODE with a non-smooth forcing function

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SUMMARY

The discussion centers on solving the ordinary differential equation (ODE) $$y''(t) = x''(t)$$ where $$x(t)$$ is defined as the ramp function. The key challenge is addressing the discontinuity at the origin, specifically the need to determine $$x'(0)$$. The participants highlight the importance of understanding different definitions of the Laplace transform, particularly in relation to singularities and discontinuities, such as the delta function on the right-hand side of the equation, $$x^{\prime\prime}(t) = \delta(t)$$.

PREREQUISITES
  • Understanding of ordinary differential equations (ODEs)
  • Familiarity with the Laplace transform and its properties
  • Knowledge of discontinuous functions and their derivatives
  • Concept of delta functions in mathematical analysis
NEXT STEPS
  • Study the properties of the Laplace transform with discontinuous functions
  • Learn techniques for handling singularities in differential equations
  • Explore the application of delta functions in ODEs
  • Investigate different definitions and interpretations of the Laplace transform
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Mathematicians, engineers, and students studying differential equations, particularly those dealing with non-smooth forcing functions and Laplace transforms.

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Homework Statement
How do I deal with non-smooth forcing functions if I want to solve the Laplace transform of an ode.
Relevant Equations
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Suppose I'm solving
$$y''(t) = x''(t)$$ where $$x(t)$$ is the ramp function. Then, by taking the Laplace transform of both sides, I need to know $x'(0)$ which is discontinuous. What is the appropriate technique to use here?
 
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How is your course defining the Laplace transform? There is more than one way, especially with regards to how you treat the origin and singularities/discontinuities at the origin such as the one you are dealing with. By the way, the right-hand side of your problem is a delta functino: ##x^{\prime\prime}(t) = \delta(t)##.

Jason
 
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