Laplace transform with Heaviside function

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Discussion Overview

The discussion revolves around finding the Laplace transform of a function involving the Heaviside step function, specifically focusing on the expression u_a(t)∂c(t)/∂t, where u_a(t) is defined for t > a. The scope includes mathematical reasoning related to Laplace transforms and the properties of the Heaviside function.

Discussion Character

  • Mathematical reasoning

Main Points Raised

  • One participant, Paolo, initially inquires about the Laplace transform of the function u_a(y)∂c(t)/∂t, expressing uncertainty about the application.
  • Another participant questions the variable with respect to which the Laplace transform is being taken.
  • Paolo clarifies that the transform is with respect to c(t).
  • Paolo later corrects an earlier mistake, stating that the Heaviside function should be u_a(t) instead of u_a(y), indicating that it is a function of time.

Areas of Agreement / Disagreement

The discussion reflects a lack of consensus on the initial formulation of the problem, with corrections made regarding the variable associated with the Heaviside function. However, the main question regarding the Laplace transform remains unresolved.

Contextual Notes

The discussion highlights a potential misunderstanding regarding the variables involved in the Laplace transform and the application of the Heaviside function, which may affect the interpretation of the problem.

ptrinka
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Hello,

I am searching for the Laplace transform of this function

u_a(y)\frac{\partial c(t)}{\partial t}

where u_a(y) is the Heaviside step function (a>0).

Can anyone help me?

Thanks in advance! Paolo
 
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ptrinka said:
Hello,

I am searching for the Laplace transform of this function

u_a(y)\frac{\partial c(t)}{\partial t}

where u_a(y) is the Heaviside step function (a>0).

Can anyone help me?

Thanks in advance! Paolo

Laplace transform with respect to which variable?
 
With respect to c(t).
 
Actually, I realized that there is an error in the equation. The correct equation is as follows:

u_a(t)\frac{\partial{c(t)}}{\partial t}

i.e. u_a is a function of t and NOT y.

Sorry for the mistake!
 

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