In Problems 1122, use elementary row operations to transform each augmented coefficient matrix to echelon form. Then
Question:
In Problems 11–22, use elementary row operations to transform each augmented coefficient matrix to echelon form. Then solve the system by back substitution.
x1 - 4x2 - 3x3 - 3x4 = 4
2x1 - 6x2 -5x3 - 5x4 = 5
3x1 - x2 - 4x3 - 5x4 = -7
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Related Book For 
Differential Equations And Linear Algebra
ISBN: 9780134497181
4th Edition
Authors: C. Edwards, David Penney, David Calvis
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