MATLAB: How to know the x – equation from above equation

equation

Hi.

I`m korean student.

Please help me…

I want that equation ( x=~~~ ) . In order words, with x equation.

I have the ' xsin(1/x)=constant ' ——— eq. (1)

From eq. (1), i want that ' x=~~ equation ' . (with matlab)

please… help me matlab code or method…..

Best Answer

There is no analytical solution to that equation. You would need to use numeric solutions. Be warned that there are always an even number of real solutions (some constants have 0 solutions, some 2, some 4, some 6, and so on.)

Related Solutions

MATLAB: Solving Coupled Ordinary differential equations with unknown constants in the equation

Take a look at the example

"Compute Fourth Eigenvalue of Mathieu's Equation"

under

https://de.mathworks.com/help/matlab/ref/bvp4c.html

It shows how to estimate one parameter of a second-order ODE given three boundary conditions. It should be no problem to use this example for your case (estimate 2 parameters given 6 boundary conditions).

Best wishes

Torsten.

MATLAB: How to solve this equation

You need three values of f(x) in order to completely solve the equation.

Or it can be expressed in terms of the known constants together with the unknown f(0), f(1), f(2)

sum(-((h0 - 1 + R .* h1 + h2 * R.^2) .* f(0) + R .* ((h0 - 1 + R .* h1) .* f(1) + R .* f(2) .* (h0 - 1))) .* (1./R)^x ./ (3 * h3 .* R.^3 + 2 * h2 .* R.^2 + R * h1)

where

R = roots([h3, h2, h1, h0-1]);

Note: all three roots of R must be included, even if imaginary!

Best Answer

Related Solutions

MATLAB: Solving Coupled Ordinary differential equations with unknown constants in the equation

MATLAB: How to solve this equation

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