Question

x1 + 0.5x2 + 0.33x3 +0.25x4 = 1.1

0.5x1 + 0.33x2 + 0.25x3 + 0.21x4 = 1.2

0.33x1 + 0.25x2 + 0.2x3 + 0.17x4 = 1.3

0.25x1 + 0.2x2 + 0.17x3 + 0.14x4 = 1.4

Select one:
a. x1 =-15,x2=40,x3=-45,x4 = -75
b. x1 =-15,x2=40,x3=45,x4 = -75
c. x1 =-15,x2=-40,x3=45,x4 = -75
d. x1 =-15,x2=40,x3=45,x4 = 75

Answer 1

Answer:

I think option a . x1 =-15 , x2 = 40 x3 = -45 x4 = -75