Laplace Transform Question

starzero
Messages
20
Reaction score
0
In my differential equations book (Edward and Penny) there are many examples of Laplace transforms being applied to linear differential equations with constant coefficients and no examples of them being applied to linear differential equations with variable coefficients. My question is, can this be done?

In particular, can someone take the Laplace Transform of something like

x^2 (d^2/dx^2)


If the answer is yes, can you provide me with a reference?

For the most part when the equations have variable coefficients the only methods that I have seen are series methods and substitution methods.

Thanks in advance for reading and any response.
 
Physics news on Phys.org
starzero said:
In my differential equations book (Edward and Penny) there are many examples of Laplace transforms being applied to linear differential equations with constant coefficients and no examples of them being applied to linear differential equations with variable coefficients. My question is, can this be done?
Hi !
This can be done for many variable coefficients, but not for all kinds of coefficient.
 

Attachments

  • Laplace.JPG
    Laplace.JPG
    16.2 KB · Views: 487
  • Like
Likes 1 person
Thread 'Direction Fields and Isoclines'
I sketched the isoclines for $$ m=-1,0,1,2 $$. Since both $$ \frac{dy}{dx} $$ and $$ D_{y} \frac{dy}{dx} $$ are continuous on the square region R defined by $$ -4\leq x \leq 4, -4 \leq y \leq 4 $$ the existence and uniqueness theorem guarantees that if we pick a point in the interior that lies on an isocline there will be a unique differentiable function (solution) passing through that point. I understand that a solution exists but I unsure how to actually sketch it. For example, consider a...
Back
Top