Use Gaussian elimination and back substitution to find the solution to the following linear systems. Be sure the steps/operations you use are clearly indicated, as well as the upper triangular system you obtain. a) 2z+y+z=11 3x+5y+5z=34 -5x-6y-3z=43 b) -2x-y-z=-11 3x+4y+z=19 3x+6y+5z=43

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Use Gaussian elimination and back substitution to find the solution to the following linear systems. Be sure the steps/operations you use are clearly indicated, as well as the upper triangular system you obtain.

a)

2z+y+z=11

3x+5y+5z=34

-5x-6y-3z=43

b)

-2x-y-z=-11

3x+4y+z=19

3x+6y+5z=43

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