Question

Solve the following Linear Equations and provide the solution on the command window: 

a)

2x-10y-z=-18  

-2x - y +6z=-76 

9x – 2y – 4z = 86 

b) 

-7q1-7q2-6q3 = 25 

5q1 – 3q2 +5q3 =-17 

-q1+2q2 - 5q3 = 42

Answer 1

4)

a)

clc
clear all
close all
format long
A=[2,-10,-1;-2,-1,6;9,-2,-4];
b=[-18;-76;86];
C=A\b;
x=C(1)
y=C(2)
z=C(3)

b)

clc
clear all
close all
format long
A=[-7,-7,-6;5,-3,5;-1,2,-5];
b=[25;-17;42];
C=A\b;
q1=C(1)
q2=C(2)
q3=C(3)