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-rw-r--r--intro.tex4
1 files changed, 3 insertions, 1 deletions
diff --git a/intro.tex b/intro.tex
index f8de19f..3709688 100644
--- a/intro.tex
+++ b/intro.tex
@@ -5,7 +5,7 @@
\setlength\headheight{13.6pt}
\usepackage{
- amsmath, amssymb, mathtools,
+ amsmath, amssymb, mathtools, relsize,
graphicx, xcolor,
fancyhdr, hyperref, enumerate, framed
}
@@ -66,6 +66,8 @@
}
\newcommand{\br}[1]{\left( #1 \right)}
+\newcommand{\brac}[2]{ \br{ \frac{#1}{#2} } }
+\newcommand{\dbrac}[2]{ \br{ \dfrac{#1}{#2} } }
\newcommand*{\qed}{\hfill\ensuremath{\blacksquare}}
\newcommand*{\qedempty}{\hfill\ensuremath{\square}}