Apply Gauss-Seidel method to solve the equation: 27 x + 6y -z = 85; 6x +15 y 2z = 72; x+y +54z =110.
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Answer:
Solve the system of equation 27x+6y-z=85,
6x+15y+2z=72, x+y+54z=110 by Gauss
Seidel Method upto two iteration and find the
value of z.
Select one:
a. 1.92
b. 1.88
c. 0
d. 1.22
Explanation:
x=(85−6y+z)/27
y=(72−6x−2z)/15
y=(110−x−y)/54
In 1st iteration we will obtain:
y=0, z=0
x=85/27=3.14
x=3.14, z=0
y=72−(6×3.14)−2×(0)/15=3.54
x=3.14, y=3.54
z=(110−3.14−3.54)/54=1.91
In 2nd iteration we will obtain:
z=1.91, y=3.54
x=85−(6×3.54)+(1.91)/27=2.43
z=1.91, x=2.43
y=72−(6×2.43)−2×(1.91)/15=3.57
y=3.57, x=2.43
z=(110−2.43−3.57)/54=1.92
∴, after the second iteration
x=2.43
y=3.57
z=1.92.
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