Differences

This shows you the differences between two versions of the page.

--- lecture_6 [2017/02/07 10:12] – rupert
+++ lecture_6 [2017/02/07 10:14] (current) – rupert
@@ Line 24: / Line 24: @@
 \begin{align*}
+\def\go#1#2#3{\begin{bmatrix}#1\\#2\\#3\end{bmatrix}}
+\def\ar#1{\\[6pt]\xrightarrow{#1}&}
 &\go{1&1&1&3}{4&2&1&2}{9&3&1&4}
 \ar{R2\to R2-4R1\text{ and }R3\to R3-9R1}