Solve Finite Difference: Find Constant Equation

In summary, the conversation is about a problem with finite differences. The question is asking for an equation to find the constant of the finite difference. One suggestion is to notice that 10 * 4 * 3 * 2 * 1 = 240. The conversation also mentions finding repeated differences and thanks Orthodontist and HallsofIvy for their input. However, there is still a problem with coming up with an equation.
  • #1
Meh
10
0
Hello there...I'm currently stuck with a problem regarding finite differences. The question asks for me to come up with an equation to find the constant of the finite difference. An example would be...Let's take the equation y=10x^4 and the constant is 240. Any hints as to where to start or anyone feeling generous enough to just give me the equation? o:)
 
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  • #2
well, I don't have any proof of this in hand but you could notice that
10 * 4 * 3 * 2 * 1 = 240
 
  • #3
I think what you are doing is finding repeated differences:

x f(x) [itex]\Delta x[/itex] [itex]\Delta^2 x[/itex]
1 10 150
2 160 640
3 810 1750 1940
4 2560 3690
5 6250
 
  • #4
Thank Orthodontist and HallsofIvy, I think Ortho is on the right track...Still having a problem with coming up with an equation.
 

FAQ: Solve Finite Difference: Find Constant Equation

What is the finite difference method?

The finite difference method is a numerical technique used for solving differential equations by approximating the derivatives with finite differences. It involves dividing the domain into smaller segments and using discrete equations to approximate the derivatives at each point.

How is the constant equation found using the finite difference method?

The constant equation can be found by solving a system of linear equations generated from the discretized form of the differential equation using the finite difference method. The solution to this system of equations will provide the values for the constant in the equation.

What is the accuracy of the finite difference method?

The accuracy of the finite difference method depends on the number of grid points used in the discretization process. Generally, the more grid points used, the more accurate the solution will be.

What are the advantages of using the finite difference method?

The finite difference method is relatively easy to implement and can handle complex geometries and boundary conditions. It also allows for the solution of problems that do not have analytical solutions.

Are there any limitations to the finite difference method?

Yes, the finite difference method may not be suitable for all types of differential equations. It is also computationally expensive for problems with large domains or high dimensions. Additionally, the accuracy of the method can be affected by the choice of grid points and the size of the grid spacing.

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