Back to The Linear Combination Lemma

Exercise 1

Avg difficulty 3.0

Decide if the matrices are row equivalent.

  • (a)  (1248),(0112)\begin{pmatrix}1&2\\ 4&8\end{pmatrix},\begin{pmatrix}0&1\\ 1&2\end{pmatrix}     (b)  (1023−115−15),(1020210204)\begin{pmatrix}1&0&2\\ 3&-1&1\\ 5&-1&5\end{pmatrix},\begin{pmatrix}1&0&2\\ 0&2&10\\ 2&0&4\end{pmatrix}     (c)  (21−111043−1),(1020210)\begin{pmatrix}2&1&-1\\ 1&1&0\\ 4&3&-1\end{pmatrix},\begin{pmatrix}1&0&2\\ 0&2&10\\ \end{pmatrix}     (d)  (111−122),(03−1225)\begin{pmatrix}1&1&1\\ -1&2&2\end{pmatrix},\begin{pmatrix}0&3&-1\\ 2&2&5\end{pmatrix}     (e)  (111003),(0121−11)\begin{pmatrix}1&1&1\\ 0&0&3\end{pmatrix},\begin{pmatrix}0&1&2\\ 1&-1&1\end{pmatrix}

Hefferon, Linear Algebra, Linear Systems, The Linear Combination Lemma, Exercise 1

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Adapted from Linear Algebra © 2016 Jim Hefferon. Licensed under CC BY-SA 3.0 US. Source: Linear Algebra. Imported at revision df2262e.