Assignment:
1) Solve the following system of four equations using Gauss Elimination:
4x1 - 2x2 - 3x3 + 6x4 = 12
-6x1 + 7x2 + 6.5x3 - 6x4 = -6.5
x1 + 7.5x2 + 6.25x3 + 5.5x4 = 16
-12x1 + 22x2 + 15.5x3 - x4 = 17
2) Use Gauss Elimination with pivoting to solve:
0.9231FAC = 1690
-FAB - 0.3846FAC = 3625
FAB - 0.7809FBC = 0
0.6427FBC - FBD = 0
FCD + 0.8575FDE = 0
FBD - 0.5145FDE - FDF = 0
0.3846FCE - 0.3846FAC - 0.7809FBC - FCD = 0
0.9231FAC + 0.6247FBC - 0.9231FCE = 0