Solve the following linear system by Gaussian elimination. X1 +4x2+2x3 = 12 -X1 - 5x2 + 3x3 = 8 X1-7x2 + 4x3 = 20

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Solve the following linear system by Gaussian elimination.
X1 =
X2
11
x3 =
a sud
X1 + 4x2 + 2x3 = 12
-X1 - 5x2 + 3x3 = 8
X1 - 7x2 + 4x3 = 20
Transcribed Image Text:Solve the following linear system by Gaussian elimination. X1 = X2 11 x3 = a sud X1 + 4x2 + 2x3 = 12 -X1 - 5x2 + 3x3 = 8 X1 - 7x2 + 4x3 = 20
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