Could anyone help me out for this Boundary Value Problem?

In summary, the conversation is about a boundary-value problem involving a partial differential equation. The problem includes specific conditions for the function U and the individual discussing the problem suggests using a Fourier series to solve it. They also recommend trying out a specific function U(x,y) = Y(y)sin(3pi x).
  • #1
whatwhat1127
1
0
Can't seem to work this out,
any solutions would be greatly appreciated!
Thanks in advance!

Solve the boundary-value problem

Uxx + Uyy + U = 0 , 0<x<1,0<y<1
U(0,y) = 0 , Ux(a,y)= f(y)
U(x,0) = 0 , Uy(x,1)= sin(3*pi*x)
 
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  • #2
Well, this is your problem and, presumably, you are taking, or have taken, a course in partial differential equations. What have you done on this?

(One's first thought for a problem like this would be to write U as a Fourier series in one of the variables with coefficients in terms of the other but that "U(x, 1)= sin(3pi x)" makes me think the whole Fourier series is not needed. Try U(x,y)= Y(y)sin(3pi x).
Now I will shut up. I have said too much already.)
 

What is a Boundary Value Problem?

A Boundary Value Problem is a type of mathematical problem that involves finding a solution to a differential equation within a specified domain, given certain boundary conditions. Boundary Value Problems are often used to model real-world situations in physics, engineering, and other fields.

What are the types of Boundary Value Problems?

There are two main types of Boundary Value Problems: Dirichlet and Neumann. In a Dirichlet problem, the boundary conditions specify the value of the solution at the boundaries of the domain. In a Neumann problem, the boundary conditions specify the derivative of the solution at the boundaries.

What is the importance of solving Boundary Value Problems?

Boundary Value Problems are important in many areas of science and engineering because they allow us to model and analyze real-world situations. They are also used to solve many types of differential equations, which are essential for understanding and predicting various physical phenomena.

What are some common methods for solving Boundary Value Problems?

Some common methods for solving Boundary Value Problems include finite difference methods, shooting methods, and spectral methods. Each method has its own advantages and disadvantages, and the choice of method often depends on the specific problem being solved.

What are some applications of Boundary Value Problems in science?

Boundary Value Problems are used in a wide range of scientific fields, such as physics, engineering, economics, and biology. They are used to model phenomena like heat transfer, fluid flow, population dynamics, and financial markets. Boundary Value Problems are also used in computer science for image processing and machine learning.

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