Esercizio 7: Eliminazione Gaussiana

Due: Monday, 22 October 2018, 3:49 PM
Solve the following linear system of 4 equations in 4 unknowns:
-1 x1 +3 x2 +2 x3 -1 x4 = 6
2 x1 +6 x2 +6 x3 +3 x4 = 16
1 x1 +3 x2 -2 x3 -11 x4 = -2
2 x1 +6 x2 +8 x3 +8 x4 = 20