Solve the system of equations

Solve the system of equations

[1 2 0 0
4 3 -6 0
0 5 -1 9
0 0 7 7]

x= 1
   2
   0
   0

Answer 1

[John BG]

A=[1 2 0 0
4 3 -6 0
0 5 -1 9
0 0 7 7];
b=[1;2;0;0];

since

det(A)==0
 =
     0

the operator

\

can also be used

x=A\b
x =
   0.500000000000000
   0.250000000000000
   0.125000000000000
  -0.125000000000000

if you find this answer useful would you please be so kind to mark my answer as Accepted Answer?

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thanks in advance

John BG

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