*A * x = b*, where

*A*is the matrix representing the coefficients and

*b*the right side of the equation system. We want to solve for

*x*.

For this we simpy have to input

*A*and

*x*in Matlab and then call the command

*x = linsolve(A, b)*

One example:

We want to solve

x1 + x2 + x3 = 5

2x1 + 3x3 = 2

10x2 - x3 = 1

Thus in Matlab we enter the matrix of coefficients (

*A = [1, 1, 1; 2, 0, 3; 0, 10, -1]*) as well as the vector

*b*(

*b = [5;2;1]*).

After entering

*x = linsolve(A, b)*Matlab returns the correct answer

*x =*

*15.6250*

*-0.8750*

*-9.7500*

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