Struggling with Matlab Functions for Linear Equations?

[mgb1974]

Anybody know Matlab, Need HELP!

Ok i am taking this class and we have to write programs. The teacher is not much help at all. I need to write this program. I hate this programing stuff.

"Create Matlab functions that solve systems of linear algebraic equations using Gauss-Elimination and Gauss-Jordan methods by obtaining the co-efficient matrix, [A], and the RHS values, {b}, as input and output the matrix of unknown values. Then, use these functions in a simple Matlab code to solve a system of linear algebraic equations based on a user's choice."

Can anybody help me out?? I will make it worth your time!

 

[PerennialII]

Ok i am taking this class and we have to write programs. The teacher is not much help at all. I need to write this program. I hate this programing stuff.

"Create Matlab functions that solve systems of linear algebraic equations using Gauss-Elimination and Gauss-Jordan methods by obtaining the co-efficient matrix, [A], and the RHS values, {b}, as input and output the matrix of unknown values. Then, use these functions in a simple Matlab code to solve a system of linear algebraic equations based on a user's choice."

Can anybody help me out?? I will make it worth your time!

You need to write m - file(s) containing the respective algorithms & simple script. The MATLAB primer for one gives some good basic guidance how to get started :

http://math.ucsd.edu/~driver/21d-s99/matlab-primer.html
http://www.egr.msu.edu/decs/facilities/software/matlab/matlabses1.pdf

 

[tacman]

Hi there,

I am a fellow Matlab user and I would be happy to help you out with your program. Programming can be frustrating at times, but don't worry, we've all been there.

Firstly, for solving systems of linear equations, I would recommend using the built-in functions in Matlab such as 'linsolve' or 'mldivide' which use the Gaussian elimination method. These functions are easy to use and will save you a lot of time and effort.

If you still want to write your own functions, you can start by creating a function for obtaining the coefficient matrix [A] and another function for obtaining the RHS values {b}. Then, you can create a third function for solving the system of equations using either the Gaussian elimination or Gauss-Jordan method.

In your main code, you can prompt the user to choose which method they want to use and then call the appropriate function. You can also give the option for the user to input their own coefficient matrix and RHS values, or you can hardcode them in your code for testing purposes.

I hope this helps get you started on your program. If you need any further assistance, feel free to reach out to me. Good luck!