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x1+x2+x3=0

x2=0

solve using back substitution

 Feb 21, 2019
 #1
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+3

All we know....after substitution....is that

 

x1 + x3 = 0       so

 

x1 =   - x3

 

That's as much as we can do....

 

 

cool cool cool

 Feb 21, 2019

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