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.
3x1 + x2 + x3 + 6x4 = 14
x1 - 2x2 + 5x3 - 5x4 = -7
4x1 + x2 + 2x3 + 7x4 = 17
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Begin by interchanging rows 1 and 2 ...View the full answer
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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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