Linear Algebra and Its Applications (5th Edition)

Published by Pearson
ISBN 10: 0-32198-238-X
ISBN 13: 978-0-32198-238-4

Chapter 1 - Linear Equations in Linear Algebra - 1.2 Exercises: 30

Answer

$$ \begin{bmatrix} 1 & 1 & 1 & 1 \\ 1 & 1 & 1 & 2 \\ \end{bmatrix} $$

Work Step by Step

The above system is undetermined because it has fewer equations (2) than unknowns (3). It is inconsistent because row reduction yields a row with coefficients of $0$ somehow adding up to $1$, which is impossible.
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