Matlab code by gauss elimination method

[Ameer Hamza]

Original title of the question: Matlab code by last square method and polyfit

[Ahmet Tasgetiren]

Find the unknown in the equation by gaussian elimination back substitution

Answer 1

[Ameer Hamza]

Since this is a homework question, so I will not show you how to implement least-square method. The following show how MATLAB allows to least-square methods in one line.

A = [1 0 2;
     2 1 0;
     3 2 1];
B = [-9;
      5;
      4];
x = A\B;

For further help. Show us the code you have already tried and ask specific questions related to MATLAB.